21331231122102 has 16 divisors (see below), whose sum is σ = 46540867902912. Its totient is φ = 6464009430920.

The previous prime is 21331231122043. The next prime is 21331231122119. The reversal of 21331231122102 is 20122113213312.

It is a congruent number.

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, 161600235708 + ... + 161600235839.

It is an arithmetic number, because the mean of its divisors is an integer number (2908804243932).

Almost surely, 2^{21331231122102} is an apocalyptic number.

21331231122102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21331231122102 is an abundant number, since it is smaller than the sum of its proper divisors (25209636780810).

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

21331231122102 is a wasteful number, since it uses less digits than its factorization.

21331231122102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323200471563.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 21331231122102 its reverse (20122113213312), we get a palindrome (41453344335414).

The spelling of 21331231122102 in words is "twenty-one trillion, three hundred thirty-one billion, two hundred thirty-one million, one hundred twenty-two thousand, one hundred two".