22201012212 has 12 divisors (see below), whose sum is σ = 51802361856. Its totient is φ = 7400337400.

The previous prime is 22201012193. The next prime is 22201012217. The reversal of 22201012212 is 21221010222.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 22201012191 and 22201012200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201012217) 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, 925042164 + ... + 925042187.

It is an arithmetic number, because the mean of its divisors is an integer number (4316863488).

Almost surely, 2^22201012212 is an apocalyptic number.

It is an amenable number.

22201012212 is an abundant number, since it is smaller than the sum of its proper divisors (29601349644).

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

22201012212 is a wasteful number, since it uses less digits than its factorization.

22201012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1850084358 (or 1850084356 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22201012212 its reverse (21221010222), we get a palindrome (43422022434).

The spelling of 22201012212 in words is "twenty-two billion, two hundred one million, twelve thousand, two hundred twelve".