21321101322102 has 32 divisors (see below), whose sum is σ = 43672104520704. Its totient is φ = 6937162221600.

The previous prime is 21321101322071. The next prime is 21321101322113. The reversal of 21321101322102 is 20122310112312.

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, 222296998 + ... + 222392889.

It is an arithmetic number, because the mean of its divisors is an integer number (1364753266272).

Almost surely, 2^{21321101322102} is an apocalyptic number.

21321101322102 is an abundant number, since it is smaller than the sum of its proper divisors (22351003198602).

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

21321101322102 is a wasteful number, since it uses less digits than its factorization.

21321101322102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444690084.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 21321101322102 its reverse (20122310112312), we get a palindrome (41443411434414).

The spelling of 21321101322102 in words is "twenty-one trillion, three hundred twenty-one billion, one hundred one million, three hundred twenty-two thousand, one hundred two".