202113304121 has 4 divisors (see below), whose sum is σ = 207575825892. Its totient is φ = 196650782352.

The previous prime is 202113304111. The next prime is 202113304171. The reversal of 202113304121 is 121403311202.

202113304121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 76842612025 + 125270692096 = 277205^2 + 353936^2 .

It is a cyclic number.

It is not a de Polignac number, because 202113304121 - 2²⁶ = 202046195257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202113304093 and 202113304102.

It is not an unprimeable number, because it can be changed into a prime (202113304111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2731260830 + ... + 2731260903.

It is an arithmetic number, because the mean of its divisors is an integer number (51893956473).

Almost surely, 2^202113304121 is an apocalyptic number.

It is an amenable number.

202113304121 is a deficient number, since it is larger than the sum of its proper divisors (5462521771).

202113304121 is an equidigital number, since it uses as much as digits as its factorization.

202113304121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5462521770.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 202113304121 its reverse (121403311202), we get a palindrome (323516615323).

The spelling of 202113304121 in words is "two hundred two billion, one hundred thirteen million, three hundred four thousand, one hundred twenty-one".