7222770321 has 32 divisors (see below), whose sum is σ = 10716625920. Its totient is φ = 4297017600.

The previous prime is 7222770311. The next prime is 7222770323. The reversal of 7222770321 is 1230772227.

It is not a de Polignac number, because 7222770321 - 2¹⁸ = 7222508177 is a prime.

It is a super-2 number, since 2×7222770321² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7222770323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1483431 + ... + 1488291.

It is an arithmetic number, because the mean of its divisors is an integer number (334894560).

Almost surely, 2^7222770321 is an apocalyptic number.

It is an amenable number.

7222770321 is a deficient number, since it is larger than the sum of its proper divisors (3493855599).

7222770321 is a wasteful number, since it uses less digits than its factorization.

7222770321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6137.

The product of its (nonzero) digits is 16464, while the sum is 33.

The square root of 7222770321 is about 84986.8832291195. The cubic root of 7222770321 is about 1933.0122292284.

The spelling of 7222770321 in words is "seven billion, two hundred twenty-two million, seven hundred seventy thousand, three hundred twenty-one".