1232115221 has 8 divisors (see below), whose sum is σ = 1309944960. Its totient is φ = 1156307152.

The previous prime is 1232115197. The next prime is 1232115259. The reversal of 1232115221 is 1225112321.

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

It is not a de Polignac number, because 1232115221 - 2¹⁰ = 1232114197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1232115193 and 1232115202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232118221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504161 + ... + 506598.

It is an arithmetic number, because the mean of its divisors is an integer number (163743120).

Almost surely, 2^1232115221 is an apocalyptic number.

It is an amenable number.

1232115221 is a deficient number, since it is larger than the sum of its proper divisors (77829739).

1232115221 is a wasteful number, since it uses less digits than its factorization.

1232115221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010835.

The product of its digits is 240, while the sum is 20.

The square root of 1232115221 is about 35101.4988426420. The cubic root of 1232115221 is about 1072.0551009051.

Adding to 1232115221 its reverse (1225112321), we get a palindrome (2457227542).

The spelling of 1232115221 in words is "one billion, two hundred thirty-two million, one hundred fifteen thousand, two hundred twenty-one".