1200100001111 has 8 divisors (see below), whose sum is σ = 1354344829200. Its totient is φ = 1053379311040.

The previous prime is 1200100001081. The next prime is 1200100001123. The reversal of 1200100001111 is 1111000010021.

It is a happy number.

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 1200100001111 - 2⁶ = 1200100001047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200100001011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1881034166 + ... + 1881034803.

It is an arithmetic number, because the mean of its divisors is an integer number (169293103650).

Almost surely, 2^{1200100001111} is an apocalyptic number.

1200100001111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1200100001111 is a deficient number, since it is larger than the sum of its proper divisors (154244828089).

1200100001111 is a wasteful number, since it uses less digits than its factorization.

1200100001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3762069009.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 1200100001111 its reverse (1111000010021), we get a palindrome (2311100011132).

The spelling of 1200100001111 in words is "one trillion, two hundred billion, one hundred million, one thousand, one hundred eleven".