20132132120021 has 2 divisors, whose sum is σ = 20132132120022. Its totient is φ = 20132132120020.

The previous prime is 20132132119973. The next prime is 20132132120063. The reversal of 20132132120021 is 12002123123102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10904425774225 + 9227706345796 = 3302185^2 + 3037714^2 .

It is a cyclic number.

It is not a de Polignac number, because 20132132120021 - 2³⁴ = 20114952250837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20132132119975 and 20132132120002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20132132120621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10066066060010 + 10066066060011.

It is an arithmetic number, because the mean of its divisors is an integer number (10066066060011).

Almost surely, 2^{20132132120021} is an apocalyptic number.

It is an amenable number.

20132132120021 is a deficient number, since it is larger than the sum of its proper divisors (1).

20132132120021 is an equidigital number, since it uses as much as digits as its factorization.

20132132120021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20132132120021 its reverse (12002123123102), we get a palindrome (32134255243123).

The spelling of 20132132120021 in words is "twenty trillion, one hundred thirty-two billion, one hundred thirty-two million, one hundred twenty thousand, twenty-one".