212211022222122 has 128 divisors (see below), whose sum is σ = 538233205708800. Its totient is φ = 54181385568000.

The previous prime is 212211022222117. The next prime is 212211022222139. The reversal of 212211022222122 is 221222220112212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212211022222092 and 212211022222101.

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 63 ways as a sum of consecutive naturals, for example, 9873097 + ... + 22845132.

It is an arithmetic number, because the mean of its divisors is an integer number (4204946919600).

Almost surely, 2^{212211022222122} is an apocalyptic number.

212211022222122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212211022222122 is an abundant number, since it is smaller than the sum of its proper divisors (326022183486678).

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

212211022222122 is a wasteful number, since it uses less digits than its factorization.

212211022222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32718492.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 212211022222122 its reverse (221222220112212), we get a palindrome (433433242334334).

The spelling of 212211022222122 in words is "two hundred twelve trillion, two hundred eleven billion, twenty-two million, two hundred twenty-two thousand, one hundred twenty-two".