222121022212 has 12 divisors (see below), whose sum is σ = 396982252800. Its totient is φ = 108697521416.

The previous prime is 222121022209. The next prime is 222121022281. The reversal of 222121022212 is 212220121222.

It is a self number, because there is not a number n which added to its sum of digits gives 222121022212.

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, 590747212 + ... + 590747587.

It is an arithmetic number, because the mean of its divisors is an integer number (33081854400).

Almost surely, 2^222121022212 is an apocalyptic number.

It is an amenable number.

222121022212 is a deficient number, since it is larger than the sum of its proper divisors (174861230588).

222121022212 is a wasteful number, since it uses less digits than its factorization.

222121022212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181494850 (or 1181494848 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 222121022212 its reverse (212220121222), we get a palindrome (434341143434).

It can be divided in two parts, 2221210 and 22212, that added together give a palindrome (2243422).

The spelling of 222121022212 in words is "two hundred twenty-two billion, one hundred twenty-one million, twenty-two thousand, two hundred twelve".