202201121122221 has 32 divisors (see below), whose sum is σ = 292484477956608. Its totient is φ = 123512583882240.

The previous prime is 202201121122207. The next prime is 202201121122241. The reversal of 202201121122221 is 122221121102202.

It is not a de Polignac number, because 202201121122221 - 2⁹ = 202201121121709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202201121122241) 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, 60769756 + ... + 64010666.

It is an arithmetic number, because the mean of its divisors is an integer number (9140139936144).

Almost surely, 2^{202201121122221} is an apocalyptic number.

It is an amenable number.

202201121122221 is a deficient number, since it is larger than the sum of its proper divisors (90283356834387).

202201121122221 is a wasteful number, since it uses less digits than its factorization.

202201121122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3252741.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 202201121122221 its reverse (122221121102202), we get a palindrome (324422242224423).

The spelling of 202201121122221 in words is "two hundred two trillion, two hundred one billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred twenty-one".