32020213021 has 4 divisors (see below), whose sum is σ = 32303577852. Its totient is φ = 31736848192.

The previous prime is 32020213019. The next prime is 32020213073. The reversal of 32020213021 is 12031202023.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5415340921 + 26604872100 = 73589^2 + 163110^2 .

It is a cyclic number.

It is not a de Polignac number, because 32020213021 - 2¹ = 32020213019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32020212986 and 32020213004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32020214021) 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, 141682246 + ... + 141682471.

It is an arithmetic number, because the mean of its divisors is an integer number (8075894463).

Almost surely, 2^32020213021 is an apocalyptic number.

It is an amenable number.

32020213021 is a deficient number, since it is larger than the sum of its proper divisors (283364831).

32020213021 is a wasteful number, since it uses less digits than its factorization.

32020213021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283364830.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 32020213021 its reverse (12031202023), we get a palindrome (44051415044).

The spelling of 32020213021 in words is "thirty-two billion, twenty million, two hundred thirteen thousand, twenty-one".