20955747122 has 8 divisors (see below), whose sum is σ = 31435119900. Its totient is φ = 10477373824.

The previous prime is 20955747061. The next prime is 20955747139. The reversal of 20955747122 is 22174755902.

It is a Cunningham number, because it is equal to 144761²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 20955747121 + 1 = 144761^2 + 1^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20955747122² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195047 + ... + 282762.

Almost surely, 2^20955747122 is an apocalyptic number.

20955747122 is a deficient number, since it is larger than the sum of its proper divisors (10479372778).

20955747122 is a wasteful number, since it uses less digits than its factorization.

20955747122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499740.

The product of its (nonzero) digits is 352800, while the sum is 44.

The spelling of 20955747122 in words is "twenty billion, nine hundred fifty-five million, seven hundred forty-seven thousand, one hundred twenty-two".