72022172222 has 64 divisors (see below), whose sum is σ = 153584169984. Its totient is φ = 24378416640.

The previous prime is 72022172213. The next prime is 72022172263. The reversal of 72022172222 is 22227122027.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1024058 + ... + 1092125.

It is an arithmetic number, because the mean of its divisors is an integer number (2399752656).

Almost surely, 2^72022172222 is an apocalyptic number.

72022172222 is an abundant number, since it is smaller than the sum of its proper divisors (81561997762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72022172222 is a wasteful number, since it uses less digits than its factorization.

72022172222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2116233.

The product of its (nonzero) digits is 6272, while the sum is 29.

Adding to 72022172222 its reverse (22227122027), we get a palindrome (94249294249).

The spelling of 72022172222 in words is "seventy-two billion, twenty-two million, one hundred seventy-two thousand, two hundred twenty-two".