210313203121 has 4 divisors (see below), whose sum is σ = 240357946432. Its totient is φ = 180268459812.

The previous prime is 210313203083. The next prime is 210313203131. The reversal of 210313203121 is 121302313012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 210313203121 - 2¹⁷ = 210313072049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210313203131) 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, 15022371645 + ... + 15022371658.

It is an arithmetic number, because the mean of its divisors is an integer number (60089486608).

Almost surely, 2^210313203121 is an apocalyptic number.

It is an amenable number.

210313203121 is a deficient number, since it is larger than the sum of its proper divisors (30044743311).

210313203121 is an equidigital number, since it uses as much as digits as its factorization.

210313203121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30044743310.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 210313203121 its reverse (121302313012), we get a palindrome (331615516133).

The spelling of 210313203121 in words is "two hundred ten billion, three hundred thirteen million, two hundred three thousand, one hundred twenty-one".