12120551671 has 8 divisors (see below), whose sum is σ = 12195128880. Its totient is φ = 12046106688.

The previous prime is 12120551657. The next prime is 12120551683. The reversal of 12120551671 is 17615502121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12120551671 - 2²⁵ = 12086997239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120551621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154075 + ... + 219043.

It is an arithmetic number, because the mean of its divisors is an integer number (1524391110).

Almost surely, 2^12120551671 is an apocalyptic number.

12120551671 is a deficient number, since it is larger than the sum of its proper divisors (74577209).

12120551671 is an equidigital number, since it uses as much as digits as its factorization.

12120551671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66113.

The product of its (nonzero) digits is 4200, while the sum is 31.

The spelling of 12120551671 in words is "twelve billion, one hundred twenty million, five hundred fifty-one thousand, six hundred seventy-one".