72220611200021 has 8 divisors (see below), whose sum is σ = 75656685676800. Its totient is φ = 68847583961520.

The previous prime is 72220611200009. The next prime is 72220611200027. The reversal of 72220611200021 is 12000211602227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72220611200021 - 2²² = 72220607005717 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 (72220611200027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15761807225 + ... + 15761811806.

It is an arithmetic number, because the mean of its divisors is an integer number (9457085709600).

Almost surely, 2^{72220611200021} is an apocalyptic number.

It is an amenable number.

72220611200021 is a deficient number, since it is larger than the sum of its proper divisors (3436074476779).

72220611200021 is a wasteful number, since it uses less digits than its factorization.

72220611200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31523619139.

The product of its (nonzero) digits is 1344, while the sum is 26.

Adding to 72220611200021 its reverse (12000211602227), we get a palindrome (84220822802248).

The spelling of 72220611200021 in words is "seventy-two trillion, two hundred twenty billion, six hundred eleven million, two hundred thousand, twenty-one".