22131142 has 24 divisors (see below), whose sum is σ = 36867600. Its totient is φ = 9955440.

The previous prime is 22131133. The next prime is 22131199. The reversal of 22131142 is 24113122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25959 + ... + 26797.

It is an arithmetic number, because the mean of its divisors is an integer number (1536150).

Almost surely, 2^22131142 is an apocalyptic number.

22131142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22131142 is a deficient number, since it is larger than the sum of its proper divisors (14736458).

22131142 is a wasteful number, since it uses less digits than its factorization.

22131142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972 (or 961 counting only the distinct ones).

The product of its digits is 96, while the sum is 16.

The square root of 22131142 is about 4704.3747724857. The cubic root of 22131142 is about 280.7595956372.

Adding to 22131142 its reverse (24113122), we get a palindrome (46244264).

The spelling of 22131142 in words is "twenty-two million, one hundred thirty-one thousand, one hundred forty-two".