20032312621 has 2 divisors, whose sum is σ = 20032312622. Its totient is φ = 20032312620.

The previous prime is 20032312613. The next prime is 20032312649. The reversal of 20032312621 is 12621323002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19772296996 + 260015625 = 140614^2 + 16125^2 .

It is a cyclic number.

It is not a de Polignac number, because 20032312621 - 2³ = 20032312613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20032312592 and 20032312601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20032312681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10016156310 + 10016156311.

It is an arithmetic number, because the mean of its divisors is an integer number (10016156311).

Almost surely, 2^20032312621 is an apocalyptic number.

It is an amenable number.

20032312621 is a deficient number, since it is larger than the sum of its proper divisors (1).

20032312621 is an equidigital number, since it uses as much as digits as its factorization.

20032312621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 20032312621 its reverse (12621323002), we get a palindrome (32653635623).

The spelling of 20032312621 in words is "twenty billion, thirty-two million, three hundred twelve thousand, six hundred twenty-one".