222102211021021 has 16 divisors (see below), whose sum is σ = 242754846455808. Its totient is φ = 202292762515200.

The previous prime is 222102211021013. The next prime is 222102211021027. The reversal of 222102211021021 is 120120112201222.

It is not a de Polignac number, because 222102211021021 - 2³ = 222102211021013 is a prime.

It is a super-2 number, since 2×222102211021021² (a number of 29 digits) contains 22 as substring.

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 222102211021021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222102211021027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74570211 + ... + 77491423.

It is an arithmetic number, because the mean of its divisors is an integer number (15172177903488).

Almost surely, 2^{222102211021021} is an apocalyptic number.

It is an amenable number.

222102211021021 is a deficient number, since it is larger than the sum of its proper divisors (20652635434787).

222102211021021 is a wasteful number, since it uses less digits than its factorization.

222102211021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3065532.

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

Adding to 222102211021021 its reverse (120120112201222), we get a palindrome (342222323222243).

The spelling of 222102211021021 in words is "two hundred twenty-two trillion, one hundred two billion, two hundred eleven million, twenty-one thousand, twenty-one".