21112211220022 has 32 divisors (see below), whose sum is σ = 34118632525824. Its totient is φ = 9740015220000.

The previous prime is 21112211219987. The next prime is 21112211220053. The reversal of 21112211220022 is 22002211221112.

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, 705442023 + ... + 705471949.

It is an arithmetic number, because the mean of its divisors is an integer number (1066207266432).

Almost surely, 2^{21112211220022} is an apocalyptic number.

21112211220022 is a deficient number, since it is larger than the sum of its proper divisors (13006421305802).

21112211220022 is a wasteful number, since it uses less digits than its factorization.

21112211220022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40404.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21112211220022 its reverse (22002211221112), we get a palindrome (43114422441134).

The spelling of 21112211220022 in words is "twenty-one trillion, one hundred twelve billion, two hundred eleven million, two hundred twenty thousand, twenty-two".