22031012212 has 12 divisors (see below), whose sum is σ = 42059205216. Its totient is φ = 10014096440.

The previous prime is 22031012209. The next prime is 22031012251. The reversal of 22031012212 is 21221013022.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250352368 + ... + 250352455.

It is an arithmetic number, because the mean of its divisors is an integer number (3504933768).

Almost surely, 2^22031012212 is an apocalyptic number.

22031012212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22031012212 is a deficient number, since it is larger than the sum of its proper divisors (20028193004).

22031012212 is a wasteful number, since it uses less digits than its factorization.

22031012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500704838 (or 500704836 counting only the distinct ones).

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

Adding to 22031012212 its reverse (21221013022), we get a palindrome (43252025234).

The spelling of 22031012212 in words is "twenty-two billion, thirty-one million, twelve thousand, two hundred twelve".