1200020000111 has 4 divisors (see below), whose sum is σ = 1200119179224. Its totient is φ = 1199920821000.

The previous prime is 1200020000077. The next prime is 1200020000161. The reversal of 1200020000111 is 1110000200021.

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-1200020000111 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 (1200020000161) 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, 49571405 + ... + 49595606.

It is an arithmetic number, because the mean of its divisors is an integer number (300029794806).

Almost surely, 2^{1200020000111} is an apocalyptic number.

1200020000111 is a deficient number, since it is larger than the sum of its proper divisors (99179113).

1200020000111 is an equidigital number, since it uses as much as digits as its factorization.

1200020000111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99179112.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1200020000111 its reverse (1110000200021), we get a palindrome (2310020200132).

The spelling of 1200020000111 in words is "one trillion, two hundred billion, twenty million, one hundred eleven", and thus it is an aban number.