32020020021 has 32 divisors (see below), whose sum is σ = 47372967936. Its totient is φ = 19073880000.

The previous prime is 32020019989. The next prime is 32020020031. The reversal of 32020020021 is 12002002023.

It is not a de Polignac number, because 32020020021 - 2⁵ = 32020019989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 32020019979 and 32020020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32020020031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3149296 + ... + 3159446.

It is an arithmetic number, because the mean of its divisors is an integer number (1480405248).

Almost surely, 2^32020020021 is an apocalyptic number.

It is an amenable number.

32020020021 is a deficient number, since it is larger than the sum of its proper divisors (15352947915).

32020020021 is a wasteful number, since it uses less digits than its factorization.

32020020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11793.

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 32020020021 its reverse (12002002023), we get a palindrome (44022022044).

The spelling of 32020020021 in words is "thirty-two billion, twenty million, twenty thousand, twenty-one".