21160622031 has 16 divisors (see below), whose sum is σ = 29773213440. Its totient is φ = 13331260800.

The previous prime is 21160622003. The next prime is 21160622033. The reversal of 21160622031 is 13022606112.

It is not a de Polignac number, because 21160622031 - 2¹⁰ = 21160621007 is a prime.

It is a super-2 number, since 2×21160622031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21160621992 and 21160622010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21160622033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 440035 + ... + 485748.

It is an arithmetic number, because the mean of its divisors is an integer number (1860825840).

Almost surely, 2^21160622031 is an apocalyptic number.

21160622031 is a deficient number, since it is larger than the sum of its proper divisors (8612591409).

21160622031 is a wasteful number, since it uses less digits than its factorization.

21160622031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926206.

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

The spelling of 21160622031 in words is "twenty-one billion, one hundred sixty million, six hundred twenty-two thousand, thirty-one".