21320406634110 has 32 divisors (see below), whose sum is σ = 51173754821280. Its totient is φ = 5684910780288.

The previous prime is 21320406634097. The next prime is 21320406634127. The reversal of 21320406634110 is 1143660402312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32860177 + ... + 33502716.

It is an arithmetic number, because the mean of its divisors is an integer number (1599179838165).

Almost surely, 2^{21320406634110} is an apocalyptic number.

21320406634110 is an abundant number, since it is smaller than the sum of its proper divisors (29853348187170).

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

21320406634110 is a wasteful number, since it uses less digits than its factorization.

21320406634110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66373612.

The product of its (nonzero) digits is 20736, while the sum is 33.

The spelling of 21320406634110 in words is "twenty-one trillion, three hundred twenty billion, four hundred six million, six hundred thirty-four thousand, one hundred ten".