12500310021 has 16 divisors (see below), whose sum is σ = 17083202304. Its totient is φ = 8126760384.

The previous prime is 12500309993. The next prime is 12500310023. The reversal of 12500310021 is 12001300521.

It is not a de Polignac number, because 12500310021 - 2⁹ = 12500309509 is a prime.

It is a super-2 number, since 2×12500310021² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12500310023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120970 + ... + 199083.

It is an arithmetic number, because the mean of its divisors is an integer number (1067700144).

Almost surely, 2^12500310021 is an apocalyptic number.

It is an amenable number.

12500310021 is a deficient number, since it is larger than the sum of its proper divisors (4582892283).

12500310021 is a wasteful number, since it uses less digits than its factorization.

12500310021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320380.

The product of its (nonzero) digits is 60, while the sum is 15.

Adding to 12500310021 its reverse (12001300521), we get a palindrome (24501610542).

The spelling of 12500310021 in words is "twelve billion, five hundred million, three hundred ten thousand, twenty-one".