202200220120121 has 4 divisors (see below), whose sum is σ = 202200252239232. Its totient is φ = 202200188001012.

The previous prime is 202200220120111. The next prime is 202200220120153. The reversal of 202200220120121 is 121021022002202.

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 a de Polignac number, because none of the positive numbers 2^k-202200220120121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202200220120121.

It is not an unprimeable number, because it can be changed into a prime (202200220120111) 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, 3166001 + ... + 20357406.

It is an arithmetic number, because the mean of its divisors is an integer number (50550063059808).

Almost surely, 2^{202200220120121} is an apocalyptic number.

It is an amenable number.

202200220120121 is a deficient number, since it is larger than the sum of its proper divisors (32119111).

202200220120121 is an equidigital number, since it uses as much as digits as its factorization.

202200220120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32119110.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 202200220120121 its reverse (121021022002202), we get a palindrome (323221242122323).

The spelling of 202200220120121 in words is "two hundred two trillion, two hundred billion, two hundred twenty million, one hundred twenty thousand, one hundred twenty-one".