202113120311 has 4 divisors (see below), whose sum is σ = 202212246000. Its totient is φ = 202013994624.

The previous prime is 202113120299. The next prime is 202113120361. The reversal of 202113120311 is 113021311202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113021311202 = 2 ⋅56510655601.

It is a cyclic number.

It is not a de Polignac number, because 202113120311 - 2¹⁰ = 202113119287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202113120311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202113120361) 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, 49559786 + ... + 49563863.

It is an arithmetic number, because the mean of its divisors is an integer number (50553061500).

Almost surely, 2^202113120311 is an apocalyptic number.

202113120311 is a deficient number, since it is larger than the sum of its proper divisors (99125689).

202113120311 is an equidigital number, since it uses as much as digits as its factorization.

202113120311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99125688.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 202113120311 its reverse (113021311202), we get a palindrome (315134431513).

The spelling of 202113120311 in words is "two hundred two billion, one hundred thirteen million, one hundred twenty thousand, three hundred eleven".