211211222222212 has 48 divisors (see below), whose sum is σ = 380089109917440. Its totient is φ = 102634235308800.

The previous prime is 211211222222173. The next prime is 211211222222251. The reversal of 211211222222212 is 212222222112112.

It is an interprime number because it is at equal distance from previous prime (211211222222173) and next prime (211211222222251).

It is a super-2 number, since 2×211211222222212² (a number of 29 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 297820623 + ... + 298528969.

It is an arithmetic number, because the mean of its divisors is an integer number (7918523123280).

Almost surely, 2^{211211222222212} is an apocalyptic number.

It is an amenable number.

211211222222212 is a deficient number, since it is larger than the sum of its proper divisors (168877887695228).

211211222222212 is a wasteful number, since it uses less digits than its factorization.

211211222222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715372 (or 715370 counting only the distinct ones).

The product of its digits is 1024, while the sum is 25.

Adding to 211211222222212 its reverse (212222222112112), we get a palindrome (423433444334324).

The spelling of 211211222222212 in words is "two hundred eleven trillion, two hundred eleven billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred twelve".