202210120012021 has 4 divisors (see below), whose sum is σ = 220592858194944. Its totient is φ = 183827381829100.

The previous prime is 202210120012009. The next prime is 202210120012051. The reversal of 202210120012021 is 120210021012202.

It is a happy number.

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 202210120012021 - 2²⁹ = 202209583141109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202210120011986 and 202210120012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202210120012051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9191369091445 + ... + 9191369091466.

It is an arithmetic number, because the mean of its divisors is an integer number (55148214548736).

Almost surely, 2^{202210120012021} is an apocalyptic number.

It is an amenable number.

202210120012021 is a deficient number, since it is larger than the sum of its proper divisors (18382738182923).

202210120012021 is a wasteful number, since it uses less digits than its factorization.

202210120012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18382738182922.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 202210120012021 its reverse (120210021012202), we get a palindrome (322420141024223).

The spelling of 202210120012021 in words is "two hundred two trillion, two hundred ten billion, one hundred twenty million, twelve thousand, twenty-one".