32201000221 has 4 divisors (see below), whose sum is σ = 34678000252. Its totient is φ = 29724000192.

The previous prime is 32201000203. The next prime is 32201000231. The reversal of 32201000221 is 12200010223.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12200010223 = 1237 ⋅9862579.

It can be written as a sum of positive squares in 2 ways, for example, as 22163765625 + 10037234596 = 148875^2 + 100186^2 .

It is a cyclic number.

It is not a de Polignac number, because 32201000221 - 2⁷ = 32201000093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 2477000017 = 32201000221 / (3 + 2 + 2 + 0 + 1 + 0 + 0 + 0 + 2 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32201000231) 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, 1238499996 + ... + 1238500021.

It is an arithmetic number, because the mean of its divisors is an integer number (8669500063).

Almost surely, 2^32201000221 is an apocalyptic number.

It is an amenable number.

32201000221 is a deficient number, since it is larger than the sum of its proper divisors (2477000031).

32201000221 is a wasteful number, since it uses less digits than its factorization.

32201000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2477000030.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 32201000221 its reverse (12200010223), we get a palindrome (44401010444).

The spelling of 32201000221 in words is "thirty-two billion, two hundred one million, two hundred twenty-one", and thus it is an aban number.