12120945637 has 2 divisors, whose sum is σ = 12120945638. Its totient is φ = 12120945636.

The previous prime is 12120945619. The next prime is 12120945653. The reversal of 12120945637 is 73654902121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10210294116 + 1910651521 = 101046^2 + 43711^2 .

It is a cyclic number.

It is not a de Polignac number, because 12120945637 - 2⁷ = 12120945509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12120945637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12120945437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060472818 + 6060472819.

It is an arithmetic number, because the mean of its divisors is an integer number (6060472819).

Almost surely, 2^12120945637 is an apocalyptic number.

It is an amenable number.

12120945637 is a deficient number, since it is larger than the sum of its proper divisors (1).

12120945637 is an equidigital number, since it uses as much as digits as its factorization.

12120945637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 12120945637 in words is "twelve billion, one hundred twenty million, nine hundred forty-five thousand, six hundred thirty-seven".