1232412121 has 6 divisors (see below), whose sum is σ = 1261741290. Its totient is φ = 1203749568.

The previous prime is 1232412091. The next prime is 1232412149. The reversal of 1232412121 is 1212142321.

It can be written as a sum of positive squares in only one way, i.e., 1228152025 + 4260096 = 35045^2 + 2064^2 .

It is not a de Polignac number, because 1232412121 - 2⁵ = 1232412089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1232442121) 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 5 ways as a sum of consecutive naturals, for example, 331416 + ... + 335113.

It is an arithmetic number, because the mean of its divisors is an integer number (210290215).

Almost surely, 2^1232412121 is an apocalyptic number.

It is an amenable number.

1232412121 is a deficient number, since it is larger than the sum of its proper divisors (29329169).

1232412121 is an frugal number, since it uses more digits than its factorization.

1232412121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666615 (or 666572 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

The square root of 1232412121 is about 35105.7277520350. The cubic root of 1232412121 is about 1072.1412042152.

Adding to 1232412121 its reverse (1212142321), we get a palindrome (2444554442).

The spelling of 1232412121 in words is "one billion, two hundred thirty-two million, four hundred twelve thousand, one hundred twenty-one".