202113121 has 8 divisors (see below), whose sum is σ = 241029504. Its totient is φ = 165707520.

The previous prime is 202113083. The next prime is 202113137. The reversal of 202113121 is 121311202.

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

It is a cyclic number.

It is not a de Polignac number, because 202113121 - 2¹¹ = 202111073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202113161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 627520 + ... + 627841.

It is an arithmetic number, because the mean of its divisors is an integer number (30128688).

Almost surely, 2^202113121 is an apocalyptic number.

It is an amenable number.

202113121 is a deficient number, since it is larger than the sum of its proper divisors (38916383).

202113121 is a wasteful number, since it uses less digits than its factorization.

202113121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1255391.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 202113121 is about 14216.6494294542. The cubic root of 202113121 is about 586.8559373741.

Adding to 202113121 its reverse (121311202), we get a palindrome (323424323).

It can be divided in two parts, 20211 and 3121, that added together give a palindrome (23332).

The spelling of 202113121 in words is "two hundred two million, one hundred thirteen thousand, one hundred twenty-one".