72220002112021 has 8 divisors (see below), whose sum is σ = 75360087360000. Its totient is φ = 69079923960432.

The previous prime is 72220002112009. The next prime is 72220002112057. The reversal of 72220002112021 is 12021120002227.

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 72220002112021 - 2¹⁷ = 72220001980949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72220002111983 and 72220002112001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72220002116021) 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, 37897980 + ... + 39757978.

It is an arithmetic number, because the mean of its divisors is an integer number (9420010920000).

Almost surely, 2^{72220002112021} is an apocalyptic number.

It is an amenable number.

72220002112021 is a deficient number, since it is larger than the sum of its proper divisors (3140085247979).

72220002112021 is a wasteful number, since it uses less digits than its factorization.

72220002112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3548195.

The product of its (nonzero) digits is 448, while the sum is 22.

Adding to 72220002112021 its reverse (12021120002227), we get a palindrome (84241122114248).

The spelling of 72220002112021 in words is "seventy-two trillion, two hundred twenty billion, two million, one hundred twelve thousand, twenty-one".