12331121357 has 2 divisors, whose sum is σ = 12331121358. Its totient is φ = 12331121356.

The previous prime is 12331121321. The next prime is 12331121381. The reversal of 12331121357 is 75312113321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7922958121 + 4408163236 = 89011^2 + 66394^2 .

It is a cyclic number.

It is not a de Polignac number, because 12331121357 - 2⁶ = 12331121293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12331121857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6165560678 + 6165560679.

It is an arithmetic number, because the mean of its divisors is an integer number (6165560679).

Almost surely, 2^12331121357 is an apocalyptic number.

It is an amenable number.

12331121357 is a deficient number, since it is larger than the sum of its proper divisors (1).

12331121357 is an equidigital number, since it uses as much as digits as its factorization.

12331121357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 29.

Adding to 12331121357 its reverse (75312113321), we get a palindrome (87643234678).

The spelling of 12331121357 in words is "twelve billion, three hundred thirty-one million, one hundred twenty-one thousand, three hundred fifty-seven".