1200111111013 has 4 divisors (see below), whose sum is σ = 1200114818848. Its totient is φ = 1200107403180.

The previous prime is 1200111110999. The next prime is 1200111111037. The reversal of 1200111111013 is 3101111110021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1200111111013 - 2⁵ = 1200111110981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200111110984 and 1200111111002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200111111413) 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, 1316481 + ... + 2033062.

It is an arithmetic number, because the mean of its divisors is an integer number (300028704712).

Almost surely, 2^{1200111111013} is an apocalyptic number.

It is an amenable number.

1200111111013 is a deficient number, since it is larger than the sum of its proper divisors (3707835).

1200111111013 is an equidigital number, since it uses as much as digits as its factorization.

1200111111013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3707834.

The product of its (nonzero) digits is 6, while the sum is 13.

Adding to 1200111111013 its reverse (3101111110021), we get a palindrome (4301222221034).

The spelling of 1200111111013 in words is "one trillion, two hundred billion, one hundred eleven million, one hundred eleven thousand, thirteen".