1212321233 has 2 divisors, whose sum is σ = 1212321234. Its totient is φ = 1212321232.

The previous prime is 1212321193. The next prime is 1212321263. The reversal of 1212321233 is 3321232121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 938319424 + 274001809 = 30632^2 + 16553^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212321233 - 2¹² = 1212317137 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212321263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606160616 + 606160617.

It is an arithmetic number, because the mean of its divisors is an integer number (606160617).

Almost surely, 2^1212321233 is an apocalyptic number.

It is an amenable number.

1212321233 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212321233 is an equidigital number, since it uses as much as digits as its factorization.

1212321233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 20.

The square root of 1212321233 is about 34818.4036538150. The cubic root of 1212321233 is about 1066.2832095087.

Adding to 1212321233 its reverse (3321232121), we get a palindrome (4533553354).

The spelling of 1212321233 in words is "one billion, two hundred twelve million, three hundred twenty-one thousand, two hundred thirty-three".