22231033212 has 24 divisors (see below), whose sum is σ = 54923729616. Its totient is φ = 6974441728.

The previous prime is 22231033211. The next prime is 22231033247. The reversal of 22231033212 is 21233013222.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22231033211) 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, 54487623 + ... + 54488030.

It is an arithmetic number, because the mean of its divisors is an integer number (2288488734).

Almost surely, 2^22231033212 is an apocalyptic number.

It is an amenable number.

22231033212 is an abundant number, since it is smaller than the sum of its proper divisors (32692696404).

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

22231033212 is a wasteful number, since it uses less digits than its factorization.

22231033212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108975677 (or 108975675 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 22231033212 its reverse (21233013222), we get a palindrome (43464046434).

The spelling of 22231033212 in words is "twenty-two billion, two hundred thirty-one million, thirty-three thousand, two hundred twelve".