12120234461 has 2 divisors, whose sum is σ = 12120234462. Its totient is φ = 12120234460.

The previous prime is 12120234361. The next prime is 12120234481. The reversal of 12120234461 is 16443202121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11592613561 + 527620900 = 107669^2 + 22970^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12120234461 is a prime.

It is a super-2 number, since 2×12120234461² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12120234461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12120234481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060117230 + 6060117231.

It is an arithmetic number, because the mean of its divisors is an integer number (6060117231).

Almost surely, 2^12120234461 is an apocalyptic number.

It is an amenable number.

12120234461 is a deficient number, since it is larger than the sum of its proper divisors (1).

12120234461 is an equidigital number, since it uses as much as digits as its factorization.

12120234461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 12120234461 its reverse (16443202121), we get a palindrome (28563436582).

The spelling of 12120234461 in words is "twelve billion, one hundred twenty million, two hundred thirty-four thousand, four hundred sixty-one".