1232505221 has 8 divisors (see below), whose sum is σ = 1254020640. Its totient is φ = 1211010768.

The previous prime is 1232505217. The next prime is 1232505233. The reversal of 1232505221 is 1225052321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1232505221 - 2² = 1232505217 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 (1232505821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155855 + ... + 163571.

It is an arithmetic number, because the mean of its divisors is an integer number (156752580).

Almost surely, 2^1232505221 is an apocalyptic number.

It is an amenable number.

1232505221 is a deficient number, since it is larger than the sum of its proper divisors (21515419).

1232505221 is an equidigital number, since it uses as much as digits as its factorization.

1232505221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10483.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1232505221 is about 35107.0537214389. The cubic root of 1232505221 is about 1072.1682010915.

Adding to 1232505221 its reverse (1225052321), we get a palindrome (2457557542).

Subtracting from 1232505221 its reverse (1225052321), we obtain a square (7452900 = 2730²).

The spelling of 1232505221 in words is "one billion, two hundred thirty-two million, five hundred five thousand, two hundred twenty-one".