21116022521010 has 64 divisors (see below), whose sum is σ = 50762106255744. Its totient is φ = 5621648256000.

The previous prime is 21116022520981. The next prime is 21116022521021. The reversal of 21116022521010 is 1012522061112.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95807757 + ... + 96027903.

It is an arithmetic number, because the mean of its divisors is an integer number (793157910246).

Almost surely, 2^{21116022521010} is an apocalyptic number.

21116022521010 is an abundant number, since it is smaller than the sum of its proper divisors (29646083734734).

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

21116022521010 is a wasteful number, since it uses less digits than its factorization.

21116022521010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225419.

The product of its (nonzero) digits is 480, while the sum is 24.

Adding to 21116022521010 its reverse (1012522061112), we get a palindrome (22128544582122).

The spelling of 21116022521010 in words is "twenty-one trillion, one hundred sixteen billion, twenty-two million, five hundred twenty-one thousand, ten".