22121012111223 has 16 divisors (see below), whose sum is σ = 30042970275200. Its totient is φ = 14474786917536.

The previous prime is 22121012111221. The next prime is 22121012111309. The reversal of 22121012111223 is 32211121012122.

It is not a de Polignac number, because 22121012111223 - 2¹ = 22121012111221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22121012111223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121012111221) 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, 198599173 + ... + 198710526.

It is an arithmetic number, because the mean of its divisors is an integer number (1877685642200).

Almost surely, 2^{22121012111223} is an apocalyptic number.

22121012111223 is a deficient number, since it is larger than the sum of its proper divisors (7921958163977).

22121012111223 is a wasteful number, since it uses less digits than its factorization.

22121012111223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397310046.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 22121012111223 its reverse (32211121012122), we get a palindrome (54332133123345).

The spelling of 22121012111223 in words is "twenty-two trillion, one hundred twenty-one billion, twelve million, one hundred eleven thousand, two hundred twenty-three".