210121230112313 has 4 divisors (see below), whose sum is σ = 226284401659428. Its totient is φ = 193958058565200.

The previous prime is 210121230112291. The next prime is 210121230112319. The reversal of 210121230112313 is 313211032121012.

It is a happy number.

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 99819921144064 + 110301308968249 = 9990992^2 + 10502443^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210121230112313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210121230112319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8081585773538 + ... + 8081585773563.

It is an arithmetic number, because the mean of its divisors is an integer number (56571100414857).

Almost surely, 2^{210121230112313} is an apocalyptic number.

It is an amenable number.

210121230112313 is a deficient number, since it is larger than the sum of its proper divisors (16163171547115).

210121230112313 is a wasteful number, since it uses less digits than its factorization.

210121230112313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16163171547114.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 210121230112313 its reverse (313211032121012), we get a palindrome (523332262233325).

The spelling of 210121230112313 in words is "two hundred ten trillion, one hundred twenty-one billion, two hundred thirty million, one hundred twelve thousand, three hundred thirteen".