222121202100222 has 16 divisors (see below), whose sum is σ = 444243246473232. Its totient is φ = 74040260321280.

The previous prime is 222121202100167. The next prime is 222121202100229. The reversal of 222121202100222 is 222001202121222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222121202100229) 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, 31640229 + ... + 38017712.

It is an arithmetic number, because the mean of its divisors is an integer number (27765202904577).

Almost surely, 2^{222121202100222} is an apocalyptic number.

222121202100222 is an abundant number, since it is smaller than the sum of its proper divisors (222122044373010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222121202100222 is a wasteful number, since it uses less digits than its factorization.

222121202100222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70189403.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 222121202100222 its reverse (222001202121222), we get a palindrome (444122404221444).

The spelling of 222121202100222 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, two hundred two million, one hundred thousand, two hundred twenty-two".