2231221264 has 20 divisors (see below), whose sum is σ = 4327419456. Its totient is φ = 1114467872.

The previous prime is 2231221247. The next prime is 2231221277. The reversal of 2231221264 is 4621221322.

It is a super-3 number, since 3×2231221264³ (a number of 29 digits) contains 333 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, 55204 + ... + 86659.

Almost surely, 2^2231221264 is an apocalyptic number.

It is an amenable number.

2231221264 is a deficient number, since it is larger than the sum of its proper divisors (2096198192).

2231221264 is a wasteful number, since it uses less digits than its factorization.

2231221264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142854 (or 142848 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

The square root of 2231221264 is about 47235.8048941690. The cubic root of 2231221264 is about 1306.7150108218.

Adding to 2231221264 its reverse (4621221322), we get a palindrome (6852442586).

The spelling of 2231221264 in words is "two billion, two hundred thirty-one million, two hundred twenty-one thousand, two hundred sixty-four".