1233121312 has 12 divisors (see below), whose sum is σ = 2427707646. Its totient is φ = 616560640.

The previous prime is 1233121291. The next prime is 1233121313. The reversal of 1233121312 is 2131213321.

It can be written as a sum of positive squares in only one way, i.e., 1205200656 + 27920656 = 34716^2 + 5284^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1233121312.

It is not an unprimeable number, because it can be changed into a prime (1233121313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19267489 + ... + 19267552.

Almost surely, 2^1233121312 is an apocalyptic number.

It is an amenable number.

1233121312 is a deficient number, since it is larger than the sum of its proper divisors (1194586334).

1233121312 is an equidigital number, since it uses as much as digits as its factorization.

1233121312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38535051 (or 38535043 counting only the distinct ones).

The product of its digits is 216, while the sum is 19.

The square root of 1233121312 is about 35115.8270869419. The cubic root of 1233121312 is about 1072.3468191709.

Adding to 1233121312 its reverse (2131213321), we get a palindrome (3364334633).

The spelling of 1233121312 in words is "one billion, two hundred thirty-three million, one hundred twenty-one thousand, three hundred twelve".