22154122312 has 32 divisors (see below), whose sum is σ = 48074054400. Its totient is φ = 9374436864.

The previous prime is 22154122301. The next prime is 22154122369. The reversal of 22154122312 is 21322145122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2499433 + ... + 2508280.

It is an arithmetic number, because the mean of its divisors is an integer number (1502314200).

Almost surely, 2^22154122312 is an apocalyptic number.

It is an amenable number.

22154122312 is an abundant number, since it is smaller than the sum of its proper divisors (25919932088).

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

22154122312 is a wasteful number, since it uses less digits than its factorization.

22154122312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5007805 (or 5007801 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

Adding to 22154122312 its reverse (21322145122), we get a palindrome (43476267434).

The spelling of 22154122312 in words is "twenty-two billion, one hundred fifty-four million, one hundred twenty-two thousand, three hundred twelve".