20201113133 has 2 divisors, whose sum is σ = 20201113134. Its totient is φ = 20201113132.

The previous prime is 20201113123. The next prime is 20201113151. The reversal of 20201113133 is 33131110202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18397667044 + 1803446089 = 135638^2 + 42467^2 .

It is a cyclic number.

It is not a de Polignac number, because 20201113133 - 2¹⁶ = 20201047597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20201113123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100556566 + 10100556567.

It is an arithmetic number, because the mean of its divisors is an integer number (10100556567).

Almost surely, 2^20201113133 is an apocalyptic number.

It is an amenable number.

20201113133 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201113133 is an equidigital number, since it uses as much as digits as its factorization.

20201113133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20201113133 its reverse (33131110202), we get a palindrome (53332223335).

The spelling of 20201113133 in words is "twenty billion, two hundred one million, one hundred thirteen thousand, one hundred thirty-three".