222102121010021 has 16 divisors (see below), whose sum is σ = 256738119229440. Its totient is φ = 188200332510000.

The previous prime is 222102121009963. The next prime is 222102121010027. The reversal of 222102121010021 is 120010121201222.

It is a cyclic number.

It is not a de Polignac number, because 222102121010021 - 2³⁰ = 222101047268197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222102121010027) 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, 309173105 + ... + 309890646.

It is an arithmetic number, because the mean of its divisors is an integer number (16046132451840).

Almost surely, 2^{222102121010021} is an apocalyptic number.

It is an amenable number.

222102121010021 is a deficient number, since it is larger than the sum of its proper divisors (34635998219419).

222102121010021 is a wasteful number, since it uses less digits than its factorization.

222102121010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619064344.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 222102121010021 its reverse (120010121201222), we get a palindrome (342112242211243).

The spelling of 222102121010021 in words is "two hundred twenty-two trillion, one hundred two billion, one hundred twenty-one million, ten thousand, twenty-one".