1200120030191 has 4 divisors (see below), whose sum is σ = 1238833579584. Its totient is φ = 1161406480800.

The previous prime is 1200120030157. The next prime is 1200120030257. The reversal of 1200120030191 is 1910300210021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200120030191 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 (1200120030101) 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, 19356774650 + ... + 19356774711.

It is an arithmetic number, because the mean of its divisors is an integer number (309708394896).

Almost surely, 2^{1200120030191} is an apocalyptic number.

1200120030191 is a deficient number, since it is larger than the sum of its proper divisors (38713549393).

1200120030191 is an equidigital number, since it uses as much as digits as its factorization.

1200120030191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38713549392.

The product of its (nonzero) digits is 108, while the sum is 20.

The spelling of 1200120030191 in words is "one trillion, two hundred billion, one hundred twenty million, thirty thousand, one hundred ninety-one".