32003312021 has 4 divisors (see below), whose sum is σ = 32218099500. Its totient is φ = 31788524544.

The previous prime is 32003311997. The next prime is 32003312057. The reversal of 32003312021 is 12021330023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12021330023 = 20639 ⋅582457.

It can be written as a sum of positive squares in 2 ways, for example, as 1861491025 + 30141820996 = 43145^2 + 173614^2 .

It is a cyclic number.

It is not a de Polignac number, because 32003312021 - 2¹⁴ = 32003295637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32003312071) 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, 107393516 + ... + 107393813.

It is an arithmetic number, because the mean of its divisors is an integer number (8054524875).

Almost surely, 2^32003312021 is an apocalyptic number.

It is an amenable number.

32003312021 is a deficient number, since it is larger than the sum of its proper divisors (214787479).

32003312021 is a wasteful number, since it uses less digits than its factorization.

32003312021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214787478.

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

Adding to 32003312021 its reverse (12021330023), we get a palindrome (44024642044).

The spelling of 32003312021 in words is "thirty-two billion, three million, three hundred twelve thousand, twenty-one".