12120234157 has 2 divisors, whose sum is σ = 12120234158. Its totient is φ = 12120234156.

The previous prime is 12120234127. The next prime is 12120234187. The reversal of 12120234157 is 75143202121.

It is a balanced prime because it is at equal distance from previous prime (12120234127) and next prime (12120234187).

It can be written as a sum of positive squares in only one way, i.e., 11623211721 + 497022436 = 107811^2 + 22294^2 .

It is a cyclic number.

It is not a de Polignac number, because 12120234157 - 2⁷ = 12120234029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12120234127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060117078 + 6060117079.

It is an arithmetic number, because the mean of its divisors is an integer number (6060117079).

Almost surely, 2^12120234157 is an apocalyptic number.

It is an amenable number.

12120234157 is a deficient number, since it is larger than the sum of its proper divisors (1).

12120234157 is an equidigital number, since it uses as much as digits as its factorization.

12120234157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

Adding to 12120234157 its reverse (75143202121), we get a palindrome (87263436278).

The spelling of 12120234157 in words is "twelve billion, one hundred twenty million, two hundred thirty-four thousand, one hundred fifty-seven".