202002131121 has 8 divisors (see below), whose sum is σ = 307812771264. Its totient is φ = 115429789200.

The previous prime is 202002131059. The next prime is 202002131137. The reversal of 202002131121 is 121131200202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 202002131121 - 2⁶ = 202002131057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202002131121.

It is not an unprimeable number, because it can be changed into a prime (202002151121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4809574530 + ... + 4809574571.

It is an arithmetic number, because the mean of its divisors is an integer number (38476596408).

Almost surely, 2^202002131121 is an apocalyptic number.

202002131121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

202002131121 is a deficient number, since it is larger than the sum of its proper divisors (105810640143).

202002131121 is an equidigital number, since it uses as much as digits as its factorization.

202002131121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9619149111.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 202002131121 its reverse (121131200202), we get a palindrome (323133331323).

The spelling of 202002131121 in words is "two hundred two billion, two million, one hundred thirty-one thousand, one hundred twenty-one".