202002002121 has 16 divisors (see below), whose sum is σ = 285294792384. Its totient is φ = 126695023104.

The previous prime is 202002002101. The next prime is 202002002129. The reversal of 202002002121 is 121200200202.

It is not a de Polignac number, because 202002002121 - 2⁶ = 202002002057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202002002097 and 202002002106.

It is not an unprimeable number, because it can be changed into a prime (202002002129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 674691 + ... + 926936.

It is an arithmetic number, because the mean of its divisors is an integer number (17830924524).

Almost surely, 2^202002002121 is an apocalyptic number.

It is an amenable number.

202002002121 is a deficient number, since it is larger than the sum of its proper divisors (83292790263).

202002002121 is a wasteful number, since it uses less digits than its factorization.

202002002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1604120.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 202002002121 its reverse (121200200202), we get a palindrome (323202202323).

The spelling of 202002002121 in words is "two hundred two billion, two million, two thousand, one hundred twenty-one".