12120514451 has 4 divisors (see below), whose sum is σ = 12121220832. Its totient is φ = 12119808072.

The previous prime is 12120514397. The next prime is 12120514513. The reversal of 12120514451 is 15441502121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12120514451 - 2¹⁴ = 12120498067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12120514451.

It is not an unprimeable number, because it can be changed into a prime (12120511451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326795 + ... + 361988.

It is an arithmetic number, because the mean of its divisors is an integer number (3030305208).

Almost surely, 2^12120514451 is an apocalyptic number.

12120514451 is a deficient number, since it is larger than the sum of its proper divisors (706381).

12120514451 is an equidigital number, since it uses as much as digits as its factorization.

12120514451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706380.

The product of its (nonzero) digits is 1600, while the sum is 26.

The spelling of 12120514451 in words is "twelve billion, one hundred twenty million, five hundred fourteen thousand, four hundred fifty-one".