202212012021 has 4 divisors (see below), whose sum is σ = 269616016032. Its totient is φ = 134808008012.

The previous prime is 202212012019. The next prime is 202212012049. The reversal of 202212012021 is 120210212202.

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 202212012021 - 2¹ = 202212012019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202212012521) 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, 33702002001 + ... + 33702002006.

It is an arithmetic number, because the mean of its divisors is an integer number (67404004008).

Almost surely, 2^202212012021 is an apocalyptic number.

It is an amenable number.

202212012021 is a deficient number, since it is larger than the sum of its proper divisors (67404004011).

202212012021 is an equidigital number, since it uses as much as digits as its factorization.

202212012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67404004010.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 202212012021 its reverse (120210212202), we get a palindrome (322422224223).

The spelling of 202212012021 in words is "two hundred two billion, two hundred twelve million, twelve thousand, twenty-one".