211211221211022 has 16 divisors (see below), whose sum is σ = 444655202549760. Its totient is φ = 66698280382392.

The previous prime is 211211221210987. The next prime is 211211221211047. The reversal of 211211221211022 is 220112122112112.

It is a super-2 number, since 2×211211221211022² (a number of 29 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 211211221211022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 926365005198 + ... + 926365005425.

It is an arithmetic number, because the mean of its divisors is an integer number (27790950159360).

Almost surely, 2^{211211221211022} is an apocalyptic number.

211211221211022 is an abundant number, since it is smaller than the sum of its proper divisors (233443981338738).

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

211211221211022 is a wasteful number, since it uses less digits than its factorization.

211211221211022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852730010647.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 211211221211022 its reverse (220112122112112), we get a palindrome (431323343323134).

The spelling of 211211221211022 in words is "two hundred eleven trillion, two hundred eleven billion, two hundred twenty-one million, two hundred eleven thousand, twenty-two".