20332021013 has 2 divisors, whose sum is σ = 20332021014. Its totient is φ = 20332021012.

The previous prime is 20332020941. The next prime is 20332021037. The reversal of 20332021013 is 31012023302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16698583729 + 3633437284 = 129223^2 + 60278^2 .

It is a cyclic number.

It is not a de Polignac number, because 20332021013 - 2¹⁴ = 20332004629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20332020982 and 20332021000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20332021313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10166010506 + 10166010507.

It is an arithmetic number, because the mean of its divisors is an integer number (10166010507).

Almost surely, 2^20332021013 is an apocalyptic number.

It is an amenable number.

20332021013 is a deficient number, since it is larger than the sum of its proper divisors (1).

20332021013 is an equidigital number, since it uses as much as digits as its factorization.

20332021013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20332021013 its reverse (31012023302), we get a palindrome (51344044315).

The spelling of 20332021013 in words is "twenty billion, three hundred thirty-two million, twenty-one thousand, thirteen".