20132120245 has 4 divisors (see below), whose sum is σ = 24158544300. Its totient is φ = 16105696192.

The previous prime is 20132120231. The next prime is 20132120257. The reversal of 20132120245 is 54202123102.

It is a happy number.

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 12844595556 + 7287524689 = 113334^2 + 85367^2 .

It is a cyclic number.

It is not a de Polignac number, because 20132120245 - 2⁵ = 20132120213 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 2013212020 + ... + 2013212029.

It is an arithmetic number, because the mean of its divisors is an integer number (6039636075).

Almost surely, 2^20132120245 is an apocalyptic number.

It is an amenable number.

20132120245 is a deficient number, since it is larger than the sum of its proper divisors (4026424055).

20132120245 is an equidigital number, since it uses as much as digits as its factorization.

20132120245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4026424054.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 20132120245 its reverse (54202123102), we get a palindrome (74334243347).

The spelling of 20132120245 in words is "twenty billion, one hundred thirty-two million, one hundred twenty thousand, two hundred forty-five".