22531455212 has 12 divisors (see below), whose sum is σ = 45062910480. Its totient is φ = 9656337936.

The previous prime is 22531455211. The next prime is 22531455239. The reversal of 22531455212 is 21255413522.

22531455212 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (22531455211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402347387 + ... + 402347442.

It is an arithmetic number, because the mean of its divisors is an integer number (3755242540).

Almost surely, 2^22531455212 is an apocalyptic number.

It is an amenable number.

22531455212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22531455212 is a wasteful number, since it uses less digits than its factorization.

22531455212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804694840 (or 804694838 counting only the distinct ones).

The product of its digits is 24000, while the sum is 32.

Adding to 22531455212 its reverse (21255413522), we get a palindrome (43786868734).

The spelling of 22531455212 in words is "twenty-two billion, five hundred thirty-one million, four hundred fifty-five thousand, two hundred twelve".