222122111212 has 12 divisors (see below), whose sum is σ = 388718580096. Its totient is φ = 111059659760.

The previous prime is 222122111203. The next prime is 222122111213. The reversal of 222122111212 is 212111221222.

It is a super-2 number, since 2×222122111212² (a number of 23 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 222122111212.

It is not an unprimeable number, because it can be changed into a prime (222122111213) 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, 63162 + ... + 669502.

It is an arithmetic number, because the mean of its divisors is an integer number (32393215008).

Almost surely, 2^222122111212 is an apocalyptic number.

It is an amenable number.

222122111212 is a deficient number, since it is larger than the sum of its proper divisors (166596468884).

222122111212 is a wasteful number, since it uses less digits than its factorization.

222122111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697928 (or 697926 counting only the distinct ones).

The product of its digits is 128, while the sum is 19.

Adding to 222122111212 its reverse (212111221222), we get a palindrome (434233332434).

The spelling of 222122111212 in words is "two hundred twenty-two billion, one hundred twenty-two million, one hundred eleven thousand, two hundred twelve".