20202321113 has 4 divisors (see below), whose sum is σ = 21756345828. Its totient is φ = 18648296400.

The previous prime is 20202321109. The next prime is 20202321133. The reversal of 20202321113 is 31112320202.

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 7163421769 + 13038899344 = 84637^2 + 114188^2 .

It is a cyclic number.

It is not a de Polignac number, because 20202321113 - 2² = 20202321109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20202321091 and 20202321100.

It is not an unprimeable number, because it can be changed into a prime (20202321133) 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, 777012338 + ... + 777012363.

It is an arithmetic number, because the mean of its divisors is an integer number (5439086457).

Almost surely, 2^20202321113 is an apocalyptic number.

It is an amenable number.

20202321113 is a deficient number, since it is larger than the sum of its proper divisors (1554024715).

20202321113 is a wasteful number, since it uses less digits than its factorization.

20202321113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554024714.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20202321113 its reverse (31112320202), we get a palindrome (51314641315).

The spelling of 20202321113 in words is "twenty billion, two hundred two million, three hundred twenty-one thousand, one hundred thirteen".