222021022212 has 36 divisors (see below), whose sum is σ = 612239789616. Its totient is φ = 67279097520.

The previous prime is 222021022151. The next prime is 222021022217. The reversal of 222021022212 is 212220120222.

222021022212 is a `hidden beast` number, since 2 + 220 + 210 + 22 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×222021022212² (a number of 23 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (222021022217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 280329178 + ... + 280329969.

Almost surely, 2^222021022212 is an apocalyptic number.

222021022212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

222021022212 is an abundant number, since it is smaller than the sum of its proper divisors (390218767404).

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

222021022212 is a wasteful number, since it uses less digits than its factorization.

222021022212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560659168 (or 560659163 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 222021022212 its reverse (212220120222), we get a palindrome (434241142434).

It can be divided in two parts, 2220210 and 22212, that added together give a palindrome (2242422).

The spelling of 222021022212 in words is "two hundred twenty-two billion, twenty-one million, twenty-two thousand, two hundred twelve".