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130012212 = 223111951839
BaseRepresentation
bin1111011111111…
…01010000110100
3100001122022020010
413233331100310
5231240342322
620522340220
73136041231
oct757752064
9301568203
10130012212
1167430110
123765a670
1320c21205
14133a4788
15b63220c
hex7bfd434

130012212 has 48 divisors (see below), whose sum is σ = 348364800. Its totient is φ = 37323360.

The previous prime is 130012187. The next prime is 130012213. The reversal of 130012212 is 212210031.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130012213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23412 + ... + 28427.

It is an arithmetic number, because the mean of its divisors is an integer number (7257600).

Almost surely, 2130012212 is an apocalyptic number.

130012212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

130012212 is an abundant number, since it is smaller than the sum of its proper divisors (218352588).

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

130012212 is a wasteful number, since it uses less digits than its factorization.

130012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51876 (or 51874 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 130012212 is about 11402.2897700418. The cubic root of 130012212 is about 506.5955638527.

Adding to 130012212 its reverse (212210031), we get a palindrome (342222243).

The spelling of 130012212 in words is "one hundred thirty million, twelve thousand, two hundred twelve".

Divisors: 1 2 3 4 6 11 12 19 22 33 38 44 57 66 76 114 132 209 228 418 627 836 1254 2508 51839 103678 155517 207356 311034 570229 622068 984941 1140458 1710687 1969882 2280916 2954823 3421374 3939764 5909646 6842748 10834351 11819292 21668702 32503053 43337404 65006106 130012212