2270440440721 has 4 divisors (see below), whose sum is σ = 2271605368500. Its totient is φ = 2269275512944.

The previous prime is 2270440440689. The next prime is 2270440440739. The reversal of 2270440440721 is 1270440440722.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1085305568400 + 1185134872321 = 1041780^2 + 1088639^2 .

It is a cyclic number.

It is not a de Polignac number, because 2270440440721 - 2⁵ = 2270440440689 is a prime.

It is a super-2 number, since 2×2270440440721² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2270440440761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 582460966 + ... + 582464863.

It is an arithmetic number, because the mean of its divisors is an integer number (567901342125).

Almost surely, 2^{2270440440721} is an apocalyptic number.

It is an amenable number.

2270440440721 is a deficient number, since it is larger than the sum of its proper divisors (1164927779).

2270440440721 is a wasteful number, since it uses less digits than its factorization.

2270440440721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164927778.

The product of its (nonzero) digits is 100352, while the sum is 37.

Subtracting from 2270440440721 its reverse (1270440440722), we obtain a palindrome (999999999999).

The spelling of 2270440440721 in words is "two trillion, two hundred seventy billion, four hundred forty million, four hundred forty thousand, seven hundred twenty-one".