20113220210213 has 16 divisors (see below), whose sum is σ = 22104718297200. Its totient is φ = 18189025113600.

The previous prime is 20113220210173. The next prime is 20113220210249. The reversal of 20113220210213 is 31201202231102.

It can be written as a sum of positive squares in 8 ways, for example, as 626849060644 + 19486371149569 = 791738^2 + 4414337^2 .

It is a cyclic number.

It is not a de Polignac number, because 20113220210213 - 2³⁴ = 20096040341029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113220210813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79616738 + ... + 79868963.

It is an arithmetic number, because the mean of its divisors is an integer number (1381544893575).

Almost surely, 2^{20113220210213} is an apocalyptic number.

It is an amenable number.

20113220210213 is a deficient number, since it is larger than the sum of its proper divisors (1991498086987).

20113220210213 is a wasteful number, since it uses less digits than its factorization.

20113220210213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159485912.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20113220210213 its reverse (31201202231102), we get a palindrome (51314422441315).

The spelling of 20113220210213 in words is "twenty trillion, one hundred thirteen billion, two hundred twenty million, two hundred ten thousand, two hundred thirteen".