212122222211982 has 32 divisors (see below), whose sum is σ = 431436515212800. Its totient is φ = 69508737200448.

The previous prime is 212122222211953. The next prime is 212122222211993. The reversal of 212122222211982 is 289112222221212.

It is a super-2 number, since 2×212122222211982² (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 212122222211982.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122750619 + ... + 124466697.

It is an arithmetic number, because the mean of its divisors is an integer number (13482391100400).

Almost surely, 2^{212122222211982} is an apocalyptic number.

212122222211982 is an abundant number, since it is smaller than the sum of its proper divisors (219314293000818).

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

212122222211982 is a wasteful number, since it uses less digits than its factorization.

212122222211982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2065320.

The product of its digits is 36864, while the sum is 39.

The spelling of 212122222211982 in words is "two hundred twelve trillion, one hundred twenty-two billion, two hundred twenty-two million, two hundred eleven thousand, nine hundred eighty-two".