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1222022230 = 2511131018461
BaseRepresentation
bin100100011010110…
…1001010001010110
310011011110011100121
41020311221101112
510000314202410
6321132102154
742166006012
oct11065512126
93134404317
101222022230
11577888430
122a130495a
131662351a0
14b8423542
157243a9da
hex48d69456

1222022230 has 64 divisors (see below), whose sum is σ = 2610086976. Its totient is φ = 406080000.

The previous prime is 1222022209. The next prime is 1222022233. The reversal of 1222022230 is 322202221.

It is a super-2 number, since 2×12220222302 = 2986676661228345800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222022233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140200 + ... + 148660.

It is an arithmetic number, because the mean of its divisors is an integer number (40782609).

Almost surely, 21222022230 is an apocalyptic number.

1222022230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222022230 is an abundant number, since it is smaller than the sum of its proper divisors (1388064746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222022230 is a wasteful number, since it uses less digits than its factorization.

1222022230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8593.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1222022230 is about 34957.4345454583. The cubic root of 1222022230 is about 1069.1197902795.

Adding to 1222022230 its reverse (322202221), we get a palindrome (1544224451).

Subtracting from 1222022230 its reverse (322202221), we obtain a square (899820009 = 299972).

The spelling of 1222022230 in words is "one billion, two hundred twenty-two million, twenty-two thousand, two hundred thirty".

Divisors: 1 2 5 10 11 13 22 26 55 65 101 110 130 143 202 286 505 715 1010 1111 1313 1430 2222 2626 5555 6565 8461 11110 13130 14443 16922 28886 42305 72215 84610 93071 109993 144430 186142 219986 465355 549965 854561 930710 1099930 1209923 1709122 2419846 4272805 6049615 8545610 9400171 11109293 12099230 18800342 22218586 47000855 55546465 94001710 111092930 122202223 244404446 611011115 1222022230