22115112154 has 4 divisors (see below), whose sum is σ = 33172668234. Its totient is φ = 11057556076.

The previous prime is 22115112127. The next prime is 22115112199. The reversal of 22115112154 is 45121151122.

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

It can be written as a sum of positive squares in only one way, i.e., 18589959025 + 3525153129 = 136345^2 + 59373^2 .

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 as a sum of consecutive naturals, namely, 5528778037 + ... + 5528778040.

Almost surely, 2^22115112154 is an apocalyptic number.

22115112154 is a deficient number, since it is larger than the sum of its proper divisors (11057556080).

22115112154 is a wasteful number, since it uses less digits than its factorization.

22115112154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11057556079.

The product of its digits is 800, while the sum is 25.

Adding to 22115112154 its reverse (45121151122), we get a palindrome (67236263276).

The spelling of 22115112154 in words is "twenty-two billion, one hundred fifteen million, one hundred twelve thousand, one hundred fifty-four".