21310031122 has 16 divisors (see below), whose sum is σ = 32456303712. Its totient is φ = 10491402240.

The previous prime is 21310031059. The next prime is 21310031161. The reversal of 21310031122 is 22113001312.

It is a junction number, because it is equal to n+sod(n) for n = 21310031096 and 21310031105.

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, 284178 + ... + 351250.

It is an arithmetic number, because the mean of its divisors is an integer number (2028518982).

Almost surely, 2^21310031122 is an apocalyptic number.

21310031122 is a deficient number, since it is larger than the sum of its proper divisors (11146272590).

21310031122 is a wasteful number, since it uses less digits than its factorization.

21310031122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69513.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21310031122 its reverse (22113001312), we get a palindrome (43423032434).

The spelling of 21310031122 in words is "twenty-one billion, three hundred ten million, thirty-one thousand, one hundred twenty-two".