20113021221133 has 4 divisors (see below), whose sum is σ = 20113313091840. Its totient is φ = 20112729350428.

The previous prime is 20113021221127. The next prime is 20113021221179. The reversal of 20113021221133 is 33112212031102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20113021221133 - 2²⁵ = 20112987666701 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 (20113021221533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145831963 + ... + 145969816.

It is an arithmetic number, because the mean of its divisors is an integer number (5028328272960).

Almost surely, 2^{20113021221133} is an apocalyptic number.

It is an amenable number.

20113021221133 is a deficient number, since it is larger than the sum of its proper divisors (291870707).

20113021221133 is an equidigital number, since it uses as much as digits as its factorization.

20113021221133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291870706.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 20113021221133 its reverse (33112212031102), we get a palindrome (53225233252235).

The spelling of 20113021221133 in words is "twenty trillion, one hundred thirteen billion, twenty-one million, two hundred twenty-one thousand, one hundred thirty-three".