220422768722 has 18 divisors (see below), whose sum is σ = 358037984943. Its totient is φ = 101729601792.

The previous prime is 220422768679. The next prime is 220422768733. The reversal of 220422768722 is 227867224022.

It can be written as a sum of positive squares in 5 ways, for example, as 151951056481 + 68471712241 = 389809^2 + 261671^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=331981.

It is a super-4 number, since 4×220422768722⁴ (a number of 46 digits) contains 4444 as substring.

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, 8618738 + ... + 8644274.

Almost surely, 2^220422768722 is an apocalyptic number.

220422768722 is a deficient number, since it is larger than the sum of its proper divisors (137615216221).

220422768722 is an frugal number, since it uses more digits than its factorization.

220422768722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51102 (or 25552 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 44.

The spelling of 220422768722 in words is "two hundred twenty billion, four hundred twenty-two million, seven hundred sixty-eight thousand, seven hundred twenty-two".