202111200202221 has 24 divisors (see below), whose sum is σ = 292016644470720. Its totient is φ = 134704689253056.

The previous prime is 202111200202211. The next prime is 202111200202291. The reversal of 202111200202221 is 122202002111202.

It is a happy number.

202111200202221 is a `hidden beast` number, since 20 + 21 + 1 + 1 + 200 + 202 + 221 = 666.

It is not a de Polignac number, because 202111200202221 - 2³⁵ = 202076840463853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202111200202194 and 202111200202203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202111200202211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2641282200 + ... + 2641358718.

It is an arithmetic number, because the mean of its divisors is an integer number (12167360186280).

Almost surely, 2^{202111200202221} is an apocalyptic number.

It is an amenable number.

202111200202221 is a deficient number, since it is larger than the sum of its proper divisors (89905444268499).

202111200202221 is a wasteful number, since it uses less digits than its factorization.

202111200202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151345 (or 151342 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 202111200202221 its reverse (122202002111202), we get a palindrome (324313202313423).

The spelling of 202111200202221 in words is "two hundred two trillion, one hundred eleven billion, two hundred million, two hundred two thousand, two hundred twenty-one".