1200011200011 has 12 divisors (see below), whose sum is σ = 1866684089088. Its totient is φ = 738468430704.

The previous prime is 1200011199991. The next prime is 1200011200027. The reversal of 1200011200011 is 1100021100021.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1200011200011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1200011199966 and 1200011200002.

It is not an unprimeable number, because it can be changed into a prime (1200011210011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5128252875 + ... + 5128253108.

It is an arithmetic number, because the mean of its divisors is an integer number (155557007424).

Almost surely, 2^{1200011200011} is an apocalyptic number.

1200011200011 is a deficient number, since it is larger than the sum of its proper divisors (666672889077).

1200011200011 is a wasteful number, since it uses less digits than its factorization.

1200011200011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10256506002 (or 10256505999 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1200011200011 its reverse (1100021100021), we get a palindrome (2300032300032).

The spelling of 1200011200011 in words is "one trillion, two hundred billion, eleven million, two hundred thousand, eleven".