12120100049 has 4 divisors (see below), whose sum is σ = 12348781236. Its totient is φ = 11891418864.

The previous prime is 12120100021. The next prime is 12120100061. The reversal of 12120100049 is 94000102121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10897898449 + 1222201600 = 104393^2 + 34960^2 .

It is a cyclic number.

It is not a de Polignac number, because 12120100049 - 2⁸ = 12120099793 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 12120100049.

It is not an unprimeable number, because it can be changed into a prime (12120100009) 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, 114340514 + ... + 114340619.

It is an arithmetic number, because the mean of its divisors is an integer number (3087195309).

Almost surely, 2^12120100049 is an apocalyptic number.

It is an amenable number.

12120100049 is a deficient number, since it is larger than the sum of its proper divisors (228681187).

12120100049 is an equidigital number, since it uses as much as digits as its factorization.

12120100049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228681186.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 12120100049 in words is "twelve billion, one hundred twenty million, one hundred thousand, forty-nine".