222021112212 has 24 divisors (see below), whose sum is σ = 575610291200. Its totient is φ = 74007037368.

The previous prime is 222021112207. The next prime is 222021112223. The reversal of 222021112212 is 212211120222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 1027875412 + ... + 1027875627.

Almost surely, 2^222021112212 is an apocalyptic number.

It is an amenable number.

222021112212 is an abundant number, since it is smaller than the sum of its proper divisors (353589178988).

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

222021112212 is a wasteful number, since it uses less digits than its factorization.

222021112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055751052 (or 2055751044 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222021112212 its reverse (212211120222), we get a palindrome (434232232434).

The spelling of 222021112212 in words is "two hundred twenty-two billion, twenty-one million, one hundred twelve thousand, two hundred twelve".