22212111202021 has 8 divisors (see below), whose sum is σ = 23925149450720. Its totient is φ = 20499703569072.

The previous prime is 22212111201967. The next prime is 22212111202037. The reversal of 22212111202021 is 12020211121222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22212111202021 - 2¹⁷ = 22212111070949 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 22212111202021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212111202091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157580775 + ... + 157721668.

It is an arithmetic number, because the mean of its divisors is an integer number (2990643681340).

Almost surely, 2^{22212111202021} is an apocalyptic number.

It is an amenable number.

22212111202021 is a deficient number, since it is larger than the sum of its proper divisors (1713038248699).

22212111202021 is a wasteful number, since it uses less digits than its factorization.

22212111202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315307875.

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

Adding to 22212111202021 its reverse (12020211121222), we get a palindrome (34232322323243).

The spelling of 22212111202021 in words is "twenty-two trillion, two hundred twelve billion, one hundred eleven million, two hundred two thousand, twenty-one".