1251312153210 has 96 divisors (see below), whose sum is σ = 3722524895232. Its totient is φ = 285680344320.

The previous prime is 1251312153209. The next prime is 1251312153211. The reversal of 1251312153210 is 123512131521.

1251312153210 is a `hidden beast` number, since 1 + 2 + 5 + 1 + 3 + 121 + 532 + 1 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1251312153209) and next prime (1251312153211).

It is not an unprimeable number, because it can be changed into a prime (1251312153211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 618906 + ... + 1698725.

It is an arithmetic number, because the mean of its divisors is an integer number (38776300992).

Almost surely, 2^{1251312153210} is an apocalyptic number.

1251312153210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1251312153210 is an abundant number, since it is smaller than the sum of its proper divisors (2471212742022).

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

1251312153210 is a wasteful number, since it uses less digits than its factorization.

1251312153210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2318508 (or 2318505 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

Adding to 1251312153210 its reverse (123512131521), we get a palindrome (1374824284731).

The spelling of 1251312153210 in words is "one trillion, two hundred fifty-one billion, three hundred twelve million, one hundred fifty-three thousand, two hundred ten".