22151322142 has 16 divisors (see below), whose sum is σ = 33882289920. Its totient is φ = 10858249368.

The previous prime is 22151322139. The next prime is 22151322181. The reversal of 22151322142 is 24122315122.

It is a congruent number.

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, 212448 + ... + 299059.

It is an arithmetic number, because the mean of its divisors is an integer number (2117643120).

Almost surely, 2^22151322142 is an apocalyptic number.

22151322142 is a deficient number, since it is larger than the sum of its proper divisors (11730967778).

22151322142 is a wasteful number, since it uses less digits than its factorization.

22151322142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511935.

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

Adding to 22151322142 its reverse (24122315122), we get a palindrome (46273637264).

The spelling of 22151322142 in words is "twenty-two billion, one hundred fifty-one million, three hundred twenty-two thousand, one hundred forty-two".