22212213212 has 24 divisors (see below), whose sum is σ = 44431470720. Its totient is φ = 9518010480.

The previous prime is 22212213197. The next prime is 22212213263. The reversal of 22212213212 is 21231221222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126887 + ... + 246017.

It is an arithmetic number, because the mean of its divisors is an integer number (1851311280).

Almost surely, 2^22212213212 is an apocalyptic number.

It is an amenable number.

22212213212 is an abundant number, since it is smaller than the sum of its proper divisors (22219257508).

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

22212213212 is a wasteful number, since it uses less digits than its factorization.

22212213212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125801 (or 125799 counting only the distinct ones).

The product of its digits is 384, while the sum is 20.

Adding to 22212213212 its reverse (21231221222), we get a palindrome (43443434434).

The spelling of 22212213212 in words is "twenty-two billion, two hundred twelve million, two hundred thirteen thousand, two hundred twelve".