4032320312021 has 4 divisors (see below), whose sum is σ = 4035617386272. Its totient is φ = 4029023237772.

The previous prime is 4032320311993. The next prime is 4032320312089. The reversal of 4032320312021 is 1202130232304.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4032320312021 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 (4032320312221) 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, 1648535291 + ... + 1648537736.

It is an arithmetic number, because the mean of its divisors is an integer number (1008904346568).

Almost surely, 2^{4032320312021} is an apocalyptic number.

It is an amenable number.

4032320312021 is a deficient number, since it is larger than the sum of its proper divisors (3297074251).

4032320312021 is a wasteful number, since it uses less digits than its factorization.

4032320312021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3297074250.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 4032320312021 its reverse (1202130232304), we get a palindrome (5234450544325).

The spelling of 4032320312021 in words is "four trillion, thirty-two billion, three hundred twenty million, three hundred twelve thousand, twenty-one".