21310201252344 has 32 divisors (see below), whose sum is σ = 53280227232000. Its totient is φ = 7102770537312.

The previous prime is 21310201252337. The next prime is 21310201252349. The reversal of 21310201252344 is 44325210201312.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21310201252349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39091174 + ... + 39632565.

It is an arithmetic number, because the mean of its divisors is an integer number (1665007101000).

Almost surely, 2^{21310201252344} is an apocalyptic number.

21310201252344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21310201252344 is an abundant number, since it is smaller than the sum of its proper divisors (31970025979656).

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

21310201252344 is a wasteful number, since it uses less digits than its factorization.

21310201252344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78735027 (or 78735023 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 21310201252344 its reverse (44325210201312), we get a palindrome (65635411453656).

The spelling of 21310201252344 in words is "twenty-one trillion, three hundred ten billion, two hundred one million, two hundred fifty-two thousand, three hundred forty-four".