232000001221 has 4 divisors (see below), whose sum is σ = 235267606944. Its totient is φ = 228732395500.

The previous prime is 232000001213. The next prime is 232000001237. The reversal of 232000001221 is 122100000232.

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 232000001221 - 2³ = 232000001213 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 (232000001251) 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, 1633802755 + ... + 1633802896.

It is an arithmetic number, because the mean of its divisors is an integer number (58816901736).

Almost surely, 2^232000001221 is an apocalyptic number.

It is an amenable number.

232000001221 is a deficient number, since it is larger than the sum of its proper divisors (3267605723).

232000001221 is an equidigital number, since it uses as much as digits as its factorization.

232000001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3267605722.

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

Adding to 232000001221 its reverse (122100000232), we get a palindrome (354100001453).

The spelling of 232000001221 in words is "two hundred thirty-two billion, one thousand, two hundred twenty-one".