21112222222022 has 16 divisors (see below), whose sum is σ = 31777863624000. Its totient is φ = 10519651689600.

The previous prime is 21112222222019. The next prime is 21112222222057. The reversal of 21112222222022 is 22022222221112.

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, 11834897 + ... + 13501452.

It is an arithmetic number, because the mean of its divisors is an integer number (1986116476500).

Almost surely, 2^{21112222222022} is an apocalyptic number.

21112222222022 is a deficient number, since it is larger than the sum of its proper divisors (10665641401978).

21112222222022 is a wasteful number, since it uses less digits than its factorization.

21112222222022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25337791.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 21112222222022 its reverse (22022222221112), we get a palindrome (43134444443134).

The spelling of 21112222222022 in words is "twenty-one trillion, one hundred twelve billion, two hundred twenty-two million, two hundred twenty-two thousand, twenty-two".