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1012212130 = 251789149449
BaseRepresentation
bin111100010101010…
…010000110100010
32121112122201000011
4330111102012202
54033111242010
6244235115134
734040442526
oct7425220642
92545581004
101012212130
1147a404a56
12242ba2aaa
131319248b7
1498609d86
155dce4a8a
hex3c5521a2

1012212130 has 64 divisors (see below), whose sum is σ = 1968300000. Its totient is φ = 373424128.

The previous prime is 1012212121. The next prime is 1012212151. The reversal of 1012212130 is 312122101.

It can be written as a sum of positive squares in 16 ways, for example, as 20151121 + 992061009 = 4489^2 + 31497^2 .

It is a super-2 number, since 2×10122121302 = 2049146792238273800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1012212130.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2254146 + ... + 2254594.

Almost surely, 21012212130 is an apocalyptic number.

1012212130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1012212130 is a deficient number, since it is larger than the sum of its proper divisors (956087870).

1012212130 is a wasteful number, since it uses less digits than its factorization.

1012212130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1012212130 is about 31815.2813911806. The cubic root of 1012212130 is about 1004.0542508370.

Adding to 1012212130 its reverse (312122101), we get a palindrome (1324334231).

The spelling of 1012212130 in words is "one billion, twelve million, two hundred twelve thousand, one hundred thirty".

Divisors: 1 2 5 10 17 34 85 89 149 170 178 298 445 449 745 890 898 1490 1513 2245 2533 3026 4490 5066 7565 7633 12665 13261 15130 15266 25330 26522 38165 39961 66305 66901 76330 79922 132610 133802 199805 225437 334505 399610 450874 669010 679337 1127185 1137317 1358674 2254370 2274634 3396685 5686585 5954189 6793370 11373170 11908378 29770945 59541890 101221213 202442426 506106065 1012212130