222022201221001 has 16 divisors (see below), whose sum is σ = 223631697422160. Its totient is φ = 220419712316160.

The previous prime is 222022201220999. The next prime is 222022201221019. The reversal of 222022201221001 is 100122102220222.

It can be written as a sum of positive squares in 8 ways, for example, as 63556929507600 + 158465271713401 = 7972260^2 + 12588299^2 .

It is a cyclic number.

It is not a de Polignac number, because 222022201221001 - 2¹ = 222022201220999 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 222022201221001.

It is not an unprimeable number, because it can be changed into a prime (222022201225001) 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, 98201655 + ... + 100437091.

It is an arithmetic number, because the mean of its divisors is an integer number (13976981088885).

Almost surely, 2^{222022201221001} is an apocalyptic number.

It is an amenable number.

222022201221001 is a deficient number, since it is larger than the sum of its proper divisors (1609496201159).

222022201221001 is a wasteful number, since it uses less digits than its factorization.

222022201221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237004.

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

Adding to 222022201221001 its reverse (100122102220222), we get a palindrome (322144303441223).

The spelling of 222022201221001 in words is "two hundred twenty-two trillion, twenty-two billion, two hundred one million, two hundred twenty-one thousand, one".