20333221101313 has 4 divisors (see below), whose sum is σ = 21529292930820. Its totient is φ = 19137149271808.

The previous prime is 20333221101289. The next prime is 20333221101419. The reversal of 20333221101313 is 31310112233302.

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 7456520419569 + 12876700681744 = 2730663^2 + 3588412^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20333221101313 is a prime.

It is a super-2 number, since 2×20333221101313² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20333221105313) 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, 598035914728 + ... + 598035914761.

It is an arithmetic number, because the mean of its divisors is an integer number (5382323232705).

Almost surely, 2^{20333221101313} is an apocalyptic number.

It is an amenable number.

20333221101313 is a deficient number, since it is larger than the sum of its proper divisors (1196071829507).

20333221101313 is a wasteful number, since it uses less digits than its factorization.

20333221101313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196071829506.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 20333221101313 its reverse (31310112233302), we get a palindrome (51643333334615).

The spelling of 20333221101313 in words is "twenty trillion, three hundred thirty-three billion, two hundred twenty-one million, one hundred one thousand, three hundred thirteen".