72222102311 has 4 divisors (see below), whose sum is σ = 73446205800. Its totient is φ = 70997998824.

The previous prime is 72222102299. The next prime is 72222102353. The reversal of 72222102311 is 11320122227.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72222102311 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 (72222108311) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 612051656 + ... + 612051773.

It is an arithmetic number, because the mean of its divisors is an integer number (18361551450).

Almost surely, 2^72222102311 is an apocalyptic number.

72222102311 is a deficient number, since it is larger than the sum of its proper divisors (1224103489).

72222102311 is a wasteful number, since it uses less digits than its factorization.

72222102311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224103488.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 72222102311 its reverse (11320122227), we get a palindrome (83542224538).

The spelling of 72222102311 in words is "seventy-two billion, two hundred twenty-two million, one hundred two thousand, three hundred eleven".