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1222100231 = 11300137021
BaseRepresentation
bin100100011010111…
…1100010100000111
310011011121010100112
41020311330110013
510000324201411
6321133503235
742166452302
oct11065742407
93134533315
101222100231
11577930aa0
122a1341b1b
13166261841
14b8443b39
1572453b8b
hex48d7c507

1222100231 has 8 divisors (see below), whose sum is σ = 1333680528. Its totient is φ = 1110600000.

The previous prime is 1222100221. The next prime is 1222100237. The reversal of 1222100231 is 1320012221.

Adding to 1222100231 its reverse (1320012221), we get a palindrome (2542112452).

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222100231 - 226 = 1154991367 is a prime.

It is a super-2 number, since 2×12221002312 = 2987057949220506722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222100237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14501 + ... + 51521.

It is an arithmetic number, because the mean of its divisors is an integer number (166710066).

Almost surely, 21222100231 is an apocalyptic number.

1222100231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1222100231 is a deficient number, since it is larger than the sum of its proper divisors (111580297).

1222100231 is a wasteful number, since it uses less digits than its factorization.

1222100231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40033.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1222100231 is about 34958.5501844685. The cubic root of 1222100231 is about 1069.1425369029.

The spelling of 1222100231 in words is "one billion, two hundred twenty-two million, one hundred thousand, two hundred thirty-one".

Divisors: 1 11 3001 33011 37021 407231 111100021 1222100231