21310132122 has 48 divisors (see below), whose sum is σ = 46336717440. Its totient is φ = 7078075200.

The previous prime is 21310132097. The next prime is 21310132159. The reversal of 21310132122 is 22123101312.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21310132095 and 21310132104.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9998997 + ... + 10001127.

It is an arithmetic number, because the mean of its divisors is an integer number (965348280).

Almost surely, 2^21310132122 is an apocalyptic number.

21310132122 is an abundant number, since it is smaller than the sum of its proper divisors (25026585318).

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

21310132122 is a wasteful number, since it uses less digits than its factorization.

21310132122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3859 (or 3856 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21310132122 its reverse (22123101312), we get a palindrome (43433233434).

The spelling of 21310132122 in words is "twenty-one billion, three hundred ten million, one hundred thirty-two thousand, one hundred twenty-two".