32381018221 has 4 divisors (see below), whose sum is σ = 32391403200. Its totient is φ = 32370633244.

The previous prime is 32381018213. The next prime is 32381018227. The reversal of 32381018221 is 12281018323.

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 not a de Polignac number, because 32381018221 - 2³ = 32381018213 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 (32381018227) 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, 5187811 + ... + 5194048.

It is an arithmetic number, because the mean of its divisors is an integer number (8097850800).

Almost surely, 2^32381018221 is an apocalyptic number.

It is an amenable number.

32381018221 is a deficient number, since it is larger than the sum of its proper divisors (10384979).

32381018221 is a wasteful number, since it uses less digits than its factorization.

32381018221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10384978.

The product of its (nonzero) digits is 4608, while the sum is 31.

The spelling of 32381018221 in words is "thirty-two billion, three hundred eighty-one million, eighteen thousand, two hundred twenty-one".