22131022012 has 24 divisors (see below), whose sum is σ = 42966241920. Its totient is φ = 9889053360.

The previous prime is 22131022007. The next prime is 22131022013. The reversal of 22131022012 is 21022013122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22131022013) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 4259928 + ... + 4265119.

It is an arithmetic number, because the mean of its divisors is an integer number (1790260080).

Almost surely, 2^22131022012 is an apocalyptic number.

22131022012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22131022012 is a deficient number, since it is larger than the sum of its proper divisors (20835219908).

22131022012 is a wasteful number, since it uses less digits than its factorization.

22131022012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8525121 (or 8525119 counting only the distinct ones).

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

Adding to 22131022012 its reverse (21022013122), we get a palindrome (43153035134).

The spelling of 22131022012 in words is "twenty-two billion, one hundred thirty-one million, twenty-two thousand, twelve".