222000221122021 has 32 divisors (see below), whose sum is σ = 235019781089280. Its totient is φ = 209466513320064.

The previous prime is 222000221121977. The next prime is 222000221122049. The reversal of 222000221122021 is 120221122000222.

It is a cyclic number.

It is not a de Polignac number, because 222000221122021 - 2³³ = 221991631187429 is a prime.

It is a super-2 number, since 2×222000221122021² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 222000221122021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222000221122721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100170126 + ... + 102362368.

It is an arithmetic number, because the mean of its divisors is an integer number (7344368159040).

Almost surely, 2^{222000221122021} is an apocalyptic number.

It is an amenable number.

222000221122021 is a deficient number, since it is larger than the sum of its proper divisors (13019559967259).

222000221122021 is a wasteful number, since it uses less digits than its factorization.

222000221122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2192985.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 222000221122021 its reverse (120221122000222), we get a palindrome (342221343122243).

The spelling of 222000221122021 in words is "two hundred twenty-two trillion, two hundred twenty-one million, one hundred twenty-two thousand, twenty-one".