72220606201001 has 4 divisors (see below), whose sum is σ = 74710971932100. Its totient is φ = 69730240469904.

The previous prime is 72220606200973. The next prime is 72220606201057. The reversal of 72220606201001 is 10010260602227.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51018734707600 + 21201871493401 = 7142740^2 + 4604549^2 .

It is a cyclic number.

It is not a de Polignac number, because 72220606201001 - 2¹⁸ = 72220605938857 is a prime.

It is a super-2 number, since 2×72220606201001² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 2490365731069 = 72220606201001 / (7 + 2 + 2 + 2 + 0 + 6 + 0 + 6 + 2 + 0 + 1 + 0 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72220606201061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1245182865506 + ... + 1245182865563.

It is an arithmetic number, because the mean of its divisors is an integer number (18677742983025).

Almost surely, 2^{72220606201001} is an apocalyptic number.

It is an amenable number.

72220606201001 is a deficient number, since it is larger than the sum of its proper divisors (2490365731099).

72220606201001 is a wasteful number, since it uses less digits than its factorization.

72220606201001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2490365731098.

The product of its (nonzero) digits is 4032, while the sum is 29.

Adding to 72220606201001 its reverse (10010260602227), we get a palindrome (82230866803228).

The spelling of 72220606201001 in words is "seventy-two trillion, two hundred twenty billion, six hundred six million, two hundred one thousand, one".