202213031221 has 4 divisors (see below), whose sum is σ = 202673653600. Its totient is φ = 201752408844.

The previous prime is 202213031159. The next prime is 202213031227. The reversal of 202213031221 is 122130312202.

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 202213031221 - 2⁹ = 202213030709 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 (202213031227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230310531 + ... + 230311408.

It is an arithmetic number, because the mean of its divisors is an integer number (50668413400).

Almost surely, 2^202213031221 is an apocalyptic number.

It is an amenable number.

202213031221 is a deficient number, since it is larger than the sum of its proper divisors (460622379).

202213031221 is an equidigital number, since it uses as much as digits as its factorization.

202213031221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460622378.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 202213031221 its reverse (122130312202), we get a palindrome (324343343423).

It can be divided in two parts, 2022130 and 31221, that added together give a triangular number (2053351 = T₂₀₂₆).

The spelling of 202213031221 in words is "two hundred two billion, two hundred thirteen million, thirty-one thousand, two hundred twenty-one".