20877009122 has 18 divisors (see below), whose sum is σ = 31784877579. Its totient is φ = 10284331540.

The previous prime is 20877009119. The next prime is 20877009133. The reversal of 20877009122 is 22190077802.

It can be written as a sum of positive squares in only one way, i.e., 10438504561 + 10438504561 = 102169^2 + 102169^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=102169.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 14507279 + ... + 14508717.

Almost surely, 2^20877009122 is an apocalyptic number.

20877009122 is a deficient number, since it is larger than the sum of its proper divisors (10907868457).

20877009122 is an frugal number, since it uses more digits than its factorization.

20877009122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3022 (or 1512 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 38.

The spelling of 20877009122 in words is "twenty billion, eight hundred seventy-seven million, nine thousand, one hundred twenty-two".