1232440221 has 8 divisors (see below), whose sum is σ = 1644016480. Its totient is φ = 821245392.

The previous prime is 1232440201. The next prime is 1232440249. The reversal of 1232440221 is 1220442321.

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

It is not a de Polignac number, because 1232440221 - 2²³ = 1224051613 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 (1232440201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87730 + ... + 100803.

It is an arithmetic number, because the mean of its divisors is an integer number (205502060).

Almost surely, 2^1232440221 is an apocalyptic number.

It is an amenable number.

1232440221 is a deficient number, since it is larger than the sum of its proper divisors (411576259).

1232440221 is a wasteful number, since it uses less digits than its factorization.

1232440221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190715.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1232440221 is about 35106.1279693446. The cubic root of 1232440221 is about 1072.1493527175.

Adding to 1232440221 its reverse (1220442321), we get a palindrome (2452882542).

The spelling of 1232440221 in words is "one billion, two hundred thirty-two million, four hundred forty thousand, two hundred twenty-one".