21126102505962 has 16 divisors (see below), whose sum is σ = 42267894685920. Its totient is φ = 7039419222992.

The previous prime is 21126102505951. The next prime is 21126102506009. The reversal of 21126102505962 is 26950520162112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 653718912 + ... + 653751227.

It is an arithmetic number, because the mean of its divisors is an integer number (2641743417870).

Almost surely, 2^{21126102505962} is an apocalyptic number.

21126102505962 is an abundant number, since it is smaller than the sum of its proper divisors (21141792179958).

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

21126102505962 is a wasteful number, since it uses less digits than its factorization.

21126102505962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307472837.

The product of its (nonzero) digits is 129600, while the sum is 42.

The spelling of 21126102505962 in words is "twenty-one trillion, one hundred twenty-six billion, one hundred two million, five hundred five thousand, nine hundred sixty-two".