211222202212 has 18 divisors (see below), whose sum is σ = 429988054902. Its totient is φ = 90523800864.

The previous prime is 211222202197. The next prime is 211222202227. The reversal of 211222202212 is 212202222112.

It is an interprime number because it is at equal distance from previous prime (211222202197) and next prime (211222202227).

It can be written as a sum of positive squares in only one way, i.e., 188003756836 + 23218445376 = 433594^2 + 152376^2 .

It is a super-2 number, since 2×211222202212² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211222202212.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 538831953 + ... + 538832344.

Almost surely, 2^211222202212 is an apocalyptic number.

It is an amenable number.

211222202212 is an abundant number, since it is smaller than the sum of its proper divisors (218765852690).

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

211222202212 is a wasteful number, since it uses less digits than its factorization.

211222202212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077664315 (or 1077664306 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 211222202212 its reverse (212202222112), we get a palindrome (423424424324).

The spelling of 211222202212 in words is "two hundred eleven billion, two hundred twenty-two million, two hundred two thousand, two hundred twelve".