7221500007 has 16 divisors (see below), whose sum is σ = 9709778400. Its totient is φ = 4773888000.

The previous prime is 7221499997. The next prime is 7221500009. The reversal of 7221500007 is 7000051227.

It is not a de Polignac number, because 7221500007 - 2¹⁴ = 7221483623 is a prime.

It is a super-2 number, since 2×7221500007² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7221500007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7221500009) 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, 255207 + ... + 282087.

It is an arithmetic number, because the mean of its divisors is an integer number (606861150).

Almost surely, 2^7221500007 is an apocalyptic number.

7221500007 is a deficient number, since it is larger than the sum of its proper divisors (2488278393).

7221500007 is a wasteful number, since it uses less digits than its factorization.

7221500007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27634.

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 7221500007 is about 84979.4093119033. The cubic root of 7221500007 is about 1932.8988989153.

The spelling of 7221500007 in words is "seven billion, two hundred twenty-one million, five hundred thousand, seven".