21100112210222 has 16 divisors (see below), whose sum is σ = 31802045396352. Its totient is φ = 10499436312120.

The previous prime is 21100112210201. The next prime is 21100112210251. The reversal of 21100112210222 is 22201221100112.

It is a self number, because there is not a number n which added to its sum of digits gives 21100112210222.

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, 5727293 + ... + 8660375.

It is an arithmetic number, because the mean of its divisors is an integer number (1987627837272).

Almost surely, 2^{21100112210222} is an apocalyptic number.

21100112210222 is a deficient number, since it is larger than the sum of its proper divisors (10701933186130).

21100112210222 is a wasteful number, since it uses less digits than its factorization.

21100112210222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2950343.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21100112210222 its reverse (22201221100112), we get a palindrome (43301333310334).

The spelling of 21100112210222 in words is "twenty-one trillion, one hundred billion, one hundred twelve million, two hundred ten thousand, two hundred twenty-two".