20512107810722 has 32 divisors (see below), whose sum is σ = 33948882100224. Its totient is φ = 9217434142800.

The previous prime is 20512107810721. The next prime is 20512107810757. The reversal of 20512107810722 is 22701870121502.

It is a super-2 number, since 2×20512107810722² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20512107810721) 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, 6380354 + ... + 9040637.

It is an arithmetic number, because the mean of its divisors is an integer number (1060902565632).

Almost surely, 2^{20512107810722} is an apocalyptic number.

20512107810722 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20512107810722 is a deficient number, since it is larger than the sum of its proper divisors (13436774289502).

20512107810722 is a wasteful number, since it uses less digits than its factorization.

20512107810722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15421694.

The product of its (nonzero) digits is 31360, while the sum is 38.

The spelling of 20512107810722 in words is "twenty trillion, five hundred twelve billion, one hundred seven million, eight hundred ten thousand, seven hundred twenty-two".