22121110220223 has 16 divisors (see below), whose sum is σ = 33708583374336. Its totient is φ = 12640550057760.

The previous prime is 22121110220197. The next prime is 22121110220233. The reversal of 22121110220223 is 32202201112122.

It is not a de Polignac number, because 22121110220223 - 2¹³ = 22121110212031 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 22121110220223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121110220233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221136 + ... + 6655157.

It is an arithmetic number, because the mean of its divisors is an integer number (2106786460896).

Almost surely, 2^{22121110220223} is an apocalyptic number.

22121110220223 is a deficient number, since it is larger than the sum of its proper divisors (11587473154113).

22121110220223 is a wasteful number, since it uses less digits than its factorization.

22121110220223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7029494.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 22121110220223 its reverse (32202201112122), we get a palindrome (54323311332345).

The spelling of 22121110220223 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred ten million, two hundred twenty thousand, two hundred twenty-three".