722201020021 has 32 divisors (see below), whose sum is σ = 811170228960. Its totient is φ = 638402494464.

The previous prime is 722201019989. The next prime is 722201020033. The reversal of 722201020021 is 120020102227.

It can be written as a sum of positive squares in 16 ways, for example, as 399912052996 + 322288967025 = 632386^2 + 567705^2 .

It is a cyclic number.

It is not a de Polignac number, because 722201020021 - 2⁵ = 722201019989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24505731 + ... + 24535183.

It is an arithmetic number, because the mean of its divisors is an integer number (25349069655).

Almost surely, 2^722201020021 is an apocalyptic number.

It is an amenable number.

722201020021 is a deficient number, since it is larger than the sum of its proper divisors (88969208939).

722201020021 is a wasteful number, since it uses less digits than its factorization.

722201020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30025.

The product of its (nonzero) digits is 224, while the sum is 19.

Adding to 722201020021 its reverse (120020102227), we get a palindrome (842221122248).

The spelling of 722201020021 in words is "seven hundred twenty-two billion, two hundred one million, twenty thousand, twenty-one".