7221124807 has 16 divisors (see below), whose sum is σ = 7816316032. Its totient is φ = 6631683840.

The previous prime is 7221124789. The next prime is 7221124811. The reversal of 7221124807 is 7084211227.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 7221124807 - 2⁷ = 7221124679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7221124817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4357123 + ... + 4358779.

It is an arithmetic number, because the mean of its divisors is an integer number (488519752).

Almost surely, 2^7221124807 is an apocalyptic number.

7221124807 is a deficient number, since it is larger than the sum of its proper divisors (595191225).

7221124807 is a wasteful number, since it uses less digits than its factorization.

7221124807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3178.

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 7221124807 is about 84977.2016896297. The cubic root of 7221124807 is about 1932.8654231265.

The spelling of 7221124807 in words is "seven billion, two hundred twenty-one million, one hundred twenty-four thousand, eight hundred seven".