1232730221 has 16 divisors (see below), whose sum is σ = 1318591488. Its totient is φ = 1150329600.

The previous prime is 1232730217. The next prime is 1232730271. The reversal of 1232730221 is 1220372321.

It is a cyclic number.

It is not a de Polignac number, because 1232730221 - 2² = 1232730217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232730211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124856 + ... + 134366.

It is an arithmetic number, because the mean of its divisors is an integer number (82411968).

Almost surely, 2^1232730221 is an apocalyptic number.

It is an amenable number.

1232730221 is a deficient number, since it is larger than the sum of its proper divisors (85861267).

1232730221 is a wasteful number, since it uses less digits than its factorization.

1232730221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9692.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 1232730221 is about 35110.2580594333. The cubic root of 1232730221 is about 1072.2334403465.

The spelling of 1232730221 in words is "one billion, two hundred thirty-two million, seven hundred thirty thousand, two hundred twenty-one".