202030121 has 4 divisors (see below), whose sum is σ = 202368000. Its totient is φ = 201692244.

The previous prime is 202030079. The next prime is 202030133. The reversal of 202030121 is 121030202.

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 202030121 - 2¹⁰ = 202029097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202030141) 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, 168041 + ... + 169238.

It is an arithmetic number, because the mean of its divisors is an integer number (50592000).

Almost surely, 2^202030121 is an apocalyptic number.

It is an amenable number.

202030121 is a deficient number, since it is larger than the sum of its proper divisors (337879).

202030121 is an equidigital number, since it uses as much as digits as its factorization.

202030121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337878.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 202030121 is about 14213.7300171348. The cubic root of 202030121 is about 586.7755934034.

Adding to 202030121 its reverse (121030202), we get a palindrome (323060323).

The spelling of 202030121 in words is "two hundred two million, thirty thousand, one hundred twenty-one".