211212210222210 has 64 divisors (see below), whose sum is σ = 537967054904832. Its totient is φ = 52887698067456.

The previous prime is 211212210222187. The next prime is 211212210222239. The reversal of 211212210222210 is 12222012212112.

It is a super-2 number, since 2×211212210222210² (a number of 29 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 478002714 + ... + 478444373.

It is an arithmetic number, because the mean of its divisors is an integer number (8405735232888).

Almost surely, 2^{211212210222210} is an apocalyptic number.

211212210222210 is an abundant number, since it is smaller than the sum of its proper divisors (326754844682622).

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

211212210222210 is a wasteful number, since it uses less digits than its factorization.

211212210222210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956447547.

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

Adding to 211212210222210 its reverse (12222012212112), we get a palindrome (223434222434322).

The spelling of 211212210222210 in words is "two hundred eleven trillion, two hundred twelve billion, two hundred ten million, two hundred twenty-two thousand, two hundred ten".