202013121 has 8 divisors (see below), whose sum is σ = 269416480. Its totient is φ = 134642592.

The previous prime is 202013113. The next prime is 202013129. The reversal of 202013121 is 121310202.

It is an interprime number because it is at equal distance from previous prime (202013113) and next prime (202013129).

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

It is not a de Polignac number, because 202013121 - 2³ = 202013113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202013097 and 202013106.

It is not an unprimeable number, because it can be changed into a prime (202013129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20421 + ... + 28653.

It is an arithmetic number, because the mean of its divisors is an integer number (33677060).

Almost surely, 2^202013121 is an apocalyptic number.

It is an amenable number.

202013121 is a deficient number, since it is larger than the sum of its proper divisors (67403359).

202013121 is an equidigital number, since it uses as much as digits as its factorization.

202013121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16415.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 202013121 is about 14213.1319912256. The cubic root of 202013121 is about 586.7591346945.

Adding to 202013121 its reverse (121310202), we get a palindrome (323323323).

The spelling of 202013121 in words is "two hundred two million, thirteen thousand, one hundred twenty-one".