222122022121212 has 24 divisors (see below), whose sum is σ = 518285070304512. Its totient is φ = 74040623751600.

The previous prime is 222122022121099. The next prime is 222122022121213. The reversal of 222122022121212 is 212121220221222.

It is a happy number.

It is a super-2 number, since 2×222122022121212² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222122022121213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15001287 + ... + 25870497.

It is an arithmetic number, because the mean of its divisors is an integer number (21595211262688).

Almost surely, 2^{222122022121212} is an apocalyptic number.

It is an amenable number.

222122022121212 is an abundant number, since it is smaller than the sum of its proper divisors (296163048183300).

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

222122022121212 is a wasteful number, since it uses less digits than its factorization.

222122022121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12572209 (or 12572207 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 222122022121212 its reverse (212121220221222), we get a palindrome (434243242342434).

The spelling of 222122022121212 in words is "two hundred twenty-two trillion, one hundred twenty-two billion, twenty-two million, one hundred twenty-one thousand, two hundred twelve".