222100211212 has 12 divisors (see below), whose sum is σ = 424009494216. Its totient is φ = 100954641440.

The previous prime is 222100211189. The next prime is 222100211261. The reversal of 222100211212 is 212112001222.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2523865993 + ... + 2523866080.

It is an arithmetic number, because the mean of its divisors is an integer number (35334124518).

Almost surely, 2^222100211212 is an apocalyptic number.

222100211212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

222100211212 is a deficient number, since it is larger than the sum of its proper divisors (201909283004).

222100211212 is a wasteful number, since it uses less digits than its factorization.

222100211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5047732088 (or 5047732086 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222100211212 its reverse (212112001222), we get a palindrome (434212212434).

The spelling of 222100211212 in words is "two hundred twenty-two billion, one hundred million, two hundred eleven thousand, two hundred twelve".