20132120205 has 48 divisors (see below), whose sum is σ = 37183923504. Its totient is φ = 10041108480.

The previous prime is 20132120093. The next prime is 20132120213. The reversal of 20132120205 is 50202123102.

It can be written as a sum of positive squares in 8 ways, for example, as 3360057156 + 16772063049 = 57966^2 + 129507^2 .

It is not a de Polignac number, because 20132120205 - 2¹⁶ = 20132054669 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36295 + ... + 203915.

It is an arithmetic number, because the mean of its divisors is an integer number (774665073).

Almost surely, 2^20132120205 is an apocalyptic number.

It is an amenable number.

20132120205 is a deficient number, since it is larger than the sum of its proper divisors (17051803299).

20132120205 is a wasteful number, since it uses less digits than its factorization.

20132120205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167806 (or 167803 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 20132120205 its reverse (50202123102), we get a palindrome (70334243307).

The spelling of 20132120205 in words is "twenty billion, one hundred thirty-two million, one hundred twenty thousand, two hundred five".