22156554233 has 4 divisors (see below), whose sum is σ = 24170786448. Its totient is φ = 20142322020.

The previous prime is 22156554157. The next prime is 22156554253. The reversal of 22156554233 is 33245565122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22156554233 - 2¹² = 22156550137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22156554253) 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, 1007116091 + ... + 1007116112.

It is an arithmetic number, because the mean of its divisors is an integer number (6042696612).

Almost surely, 2^22156554233 is an apocalyptic number.

It is an amenable number.

22156554233 is a deficient number, since it is larger than the sum of its proper divisors (2014232215).

22156554233 is a wasteful number, since it uses less digits than its factorization.

22156554233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2014232214.

The product of its digits is 216000, while the sum is 38.

The spelling of 22156554233 in words is "twenty-two billion, one hundred fifty-six million, five hundred fifty-four thousand, two hundred thirty-three".