20113100033 has 4 divisors (see below), whose sum is σ = 21660261588. Its totient is φ = 18565938480.

The previous prime is 20113100023. The next prime is 20113100057. The reversal of 20113100033 is 33000131102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33000131102 = 2 ⋅16500065551.

It can be written as a sum of positive squares in 2 ways, for example, as 967396609 + 19145703424 = 31103^2 + 138368^2 .

It is a cyclic number.

It is not a de Polignac number, because 20113100033 - 2¹⁸ = 20112837889 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20113099990 and 20113100017.

It is not an unprimeable number, because it can be changed into a prime (20113100023) 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, 773580758 + ... + 773580783.

It is an arithmetic number, because the mean of its divisors is an integer number (5415065397).

Almost surely, 2^20113100033 is an apocalyptic number.

It is an amenable number.

20113100033 is a deficient number, since it is larger than the sum of its proper divisors (1547161555).

20113100033 is a wasteful number, since it uses less digits than its factorization.

20113100033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547161554.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 20113100033 its reverse (33000131102), we get a palindrome (53113231135).

The spelling of 20113100033 in words is "twenty billion, one hundred thirteen million, one hundred thousand, thirty-three".