202220001002121 has 4 divisors (see below), whose sum is σ = 269626668002832. Its totient is φ = 134813334001412.

The previous prime is 202220001002111. The next prime is 202220001002171. The reversal of 202220001002121 is 121200100022202.

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 202220001002121 - 2¹³ = 202220000993929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202220001002121.

It is not an unprimeable number, because it can be changed into a prime (202220001002111) 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, 33703333500351 + ... + 33703333500356.

It is an arithmetic number, because the mean of its divisors is an integer number (67406667000708).

Almost surely, 2^{202220001002121} is an apocalyptic number.

It is an amenable number.

202220001002121 is a deficient number, since it is larger than the sum of its proper divisors (67406667000711).

202220001002121 is an equidigital number, since it uses as much as digits as its factorization.

202220001002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67406667000710.

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

Adding to 202220001002121 its reverse (121200100022202), we get a palindrome (323420101024323).

The spelling of 202220001002121 in words is "two hundred two trillion, two hundred twenty billion, one million, two thousand, one hundred twenty-one".