32020013021 has 4 divisors (see below), whose sum is σ = 32039865852. Its totient is φ = 32000160192.

The previous prime is 32020012967. The next prime is 32020013033. The reversal of 32020013021 is 12031002023.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12031002023 = 1621 ⋅7421963.

It can be written as a sum of positive squares in 2 ways, for example, as 16146784900 + 15873228121 = 127070^2 + 125989^2 .

It is a cyclic number.

It is not a de Polignac number, because 32020013021 - 2⁶ = 32020012957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32020012987 and 32020013005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32020013821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9923996 + ... + 9927221.

It is an arithmetic number, because the mean of its divisors is an integer number (8009966463).

Almost surely, 2^32020013021 is an apocalyptic number.

It is an amenable number.

32020013021 is a deficient number, since it is larger than the sum of its proper divisors (19852831).

32020013021 is a wasteful number, since it uses less digits than its factorization.

32020013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19852830.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 32020013021 its reverse (12031002023), we get a palindrome (44051015044).

The spelling of 32020013021 in words is "thirty-two billion, twenty million, thirteen thousand, twenty-one".