32188442021 has 2 divisors, whose sum is σ = 32188442022. Its totient is φ = 32188442020.

The previous prime is 32188441981. The next prime is 32188442059. The reversal of 32188442021 is 12024488123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26368888225 + 5819553796 = 162385^2 + 76286^2 .

It is an emirp because it is prime and its reverse (12024488123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32188442021 - 2¹⁰ = 32188440997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32188442081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16094221010 + 16094221011.

It is an arithmetic number, because the mean of its divisors is an integer number (16094221011).

Almost surely, 2^32188442021 is an apocalyptic number.

It is an amenable number.

32188442021 is a deficient number, since it is larger than the sum of its proper divisors (1).

32188442021 is an equidigital number, since it uses as much as digits as its factorization.

32188442021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24576, while the sum is 35.

The spelling of 32188442021 in words is "thirty-two billion, one hundred eighty-eight million, four hundred forty-two thousand, twenty-one".