220770297272281 has 9 divisors (see below), whose sum is σ = 222854458862581. Its totient is φ = 218705448481852.

The previous prime is 220770297272269. The next prime is 220770297272333. The reversal of 220770297272281 is 182272792077022.

The square root of 220770297272281 is 14858341.

It is a perfect power (a square), and thus also a powerful number.

220770297272281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220770297272281 - 2²⁵ = 220770263717849 is a prime.

It is a super-2 number, since 2×220770297272281² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220770297272201) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1589773056 + ... + 1589911918.

Almost surely, 2^{220770297272281} is an apocalyptic number.

220770297272281 is the 14858341-st square number.

220770297272281 is the 7429171-st centered octagonal number.

It is an amenable number.

220770297272281 is a deficient number, since it is larger than the sum of its proper divisors (2084161590300).

220770297272281 is an frugal number, since it uses more digits than its factorization.

220770297272281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277940 (or 138970 counting only the distinct ones).

The product of its (nonzero) digits is 11063808, while the sum is 58.

The spelling of 220770297272281 in words is "two hundred twenty trillion, seven hundred seventy billion, two hundred ninety-seven million, two hundred seventy-two thousand, two hundred eighty-one".