20122113133 has 4 divisors (see below), whose sum is σ = 20146623228. Its totient is φ = 20097603040.

The previous prime is 20122113119. The next prime is 20122113139. The reversal of 20122113133 is 33131122102.

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 14742330724 + 5379782409 = 121418^2 + 73347^2 .

It is a cyclic number.

It is not a de Polignac number, because 20122113133 - 2²⁵ = 20088558701 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20122113133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122113139) 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, 12253816 + ... + 12255457.

It is an arithmetic number, because the mean of its divisors is an integer number (5036655807).

Almost surely, 2^20122113133 is an apocalyptic number.

It is an amenable number.

20122113133 is a deficient number, since it is larger than the sum of its proper divisors (24510095).

20122113133 is an equidigital number, since it uses as much as digits as its factorization.

20122113133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24510094.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20122113133 its reverse (33131122102), we get a palindrome (53253235235).

The spelling of 20122113133 in words is "twenty billion, one hundred twenty-two million, one hundred thirteen thousand, one hundred thirty-three".