211212122021022 has 16 divisors (see below), whose sum is σ = 428210877522960. Its totient is φ = 69439601760192.

The previous prime is 211212122020987. The next prime is 211212122021041. The reversal of 211212122021022 is 220120221212112.

It is a super-2 number, since 2×211212122021022² (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 211212122021022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241109727897 + ... + 241109728772.

It is an arithmetic number, because the mean of its divisors is an integer number (26763179845185).

Almost surely, 2^{211212122021022} is an apocalyptic number.

211212122021022 is an abundant number, since it is smaller than the sum of its proper divisors (216998755501938).

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

211212122021022 is a wasteful number, since it uses less digits than its factorization.

211212122021022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482219456747.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 211212122021022 its reverse (220120221212112), we get a palindrome (431332343233134).

The spelling of 211212122021022 in words is "two hundred eleven trillion, two hundred twelve billion, one hundred twenty-two million, twenty-one thousand, twenty-two".