129151507212 has 1152 divisors, whose sum is σ = 471943413760. Its totient is φ = 29930757120.

The previous prime is 129151507207. The next prime is 129151507237. The reversal of 129151507212 is 212705151921.

129151507212 is a `hidden beast` number, since 1 + 2 + 91 + 51 + 507 + 2 + 12 = 666.

It is a super-2 number, since 2×129151507212² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 1927634403 + ... + 1927634469.

Almost surely, 2^129151507212 is an apocalyptic number.

129151507212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129151507212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235971706880).

129151507212 is an abundant number, since it is smaller than the sum of its proper divisors (342791906548).

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

129151507212 is a wasteful number, since it uses less digits than its factorization.

129151507212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 36.

The spelling of 129151507212 in words is "one hundred twenty-nine billion, one hundred fifty-one million, five hundred seven thousand, two hundred twelve".