202221112021211 has 4 divisors (see below), whose sum is σ = 212864328443400. Its totient is φ = 191577895599024.

The previous prime is 202221112021177. The next prime is 202221112021303. The reversal of 202221112021211 is 112120211122202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 202221112021211 - 2³⁰ = 202220038279387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202281112021211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5321608211066 + ... + 5321608211103.

It is an arithmetic number, because the mean of its divisors is an integer number (53216082110850).

Almost surely, 2^{202221112021211} is an apocalyptic number.

202221112021211 is a deficient number, since it is larger than the sum of its proper divisors (10643216422189).

202221112021211 is a wasteful number, since it uses less digits than its factorization.

202221112021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10643216422188.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 202221112021211 its reverse (112120211122202), we get a palindrome (314341323143413).

The spelling of 202221112021211 in words is "two hundred two trillion, two hundred twenty-one billion, one hundred twelve million, twenty-one thousand, two hundred eleven".