21040102130412 has 12 divisors (see below), whose sum is σ = 49093571637656. Its totient is φ = 7013367376800.

The previous prime is 21040102130323. The next prime is 21040102130471. The reversal of 21040102130412 is 21403120104012.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 876670922089 + ... + 876670922112.

Almost surely, 2^{21040102130412} is an apocalyptic number.

It is an amenable number.

21040102130412 is an abundant number, since it is smaller than the sum of its proper divisors (28053469507244).

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

21040102130412 is a wasteful number, since it uses less digits than its factorization.

21040102130412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753341844208 (or 1753341844206 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 21040102130412 its reverse (21403120104012), we get a palindrome (42443222234424).

The spelling of 21040102130412 in words is "twenty-one trillion, forty billion, one hundred two million, one hundred thirty thousand, four hundred twelve".