202232012221 has 4 divisors (see below), whose sum is σ = 202233243744. Its totient is φ = 202230780700.

The previous prime is 202232012219. The next prime is 202232012239. The reversal of 202232012221 is 122210232202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 202232012221 - 2¹ = 202232012219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202232016221) 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, 323065 + ... + 713326.

It is an arithmetic number, because the mean of its divisors is an integer number (50558310936).

Almost surely, 2^202232012221 is an apocalyptic number.

It is an amenable number.

202232012221 is a deficient number, since it is larger than the sum of its proper divisors (1231523).

202232012221 is a wasteful number, since it uses less digits than its factorization.

202232012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231522.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 202232012221 its reverse (122210232202), we get a palindrome (324442244423).

The spelling of 202232012221 in words is "two hundred two billion, two hundred thirty-two million, twelve thousand, two hundred twenty-one".