72211191215 has 16 divisors (see below), whose sum is σ = 89652541440. Its totient is φ = 55778038560.

The previous prime is 72211191197. The next prime is 72211191257. The reversal of 72211191215 is 51219111227.

It is not a de Polignac number, because 72211191215 - 2⁸ = 72211190959 is a prime.

It is a super-2 number, since 2×72211191215² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 462569 + ... + 598658.

It is an arithmetic number, because the mean of its divisors is an integer number (5603283840).

Almost surely, 2^72211191215 is an apocalyptic number.

72211191215 is a deficient number, since it is larger than the sum of its proper divisors (17441350225).

72211191215 is a wasteful number, since it uses less digits than its factorization.

72211191215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061702.

The product of its digits is 2520, while the sum is 32.

The spelling of 72211191215 in words is "seventy-two billion, two hundred eleven million, one hundred ninety-one thousand, two hundred fifteen".