1200022000011 has 6 divisors (see below), whose sum is σ = 1733365111140. Its totient is φ = 800014666668.

The previous prime is 1200021999961. The next prime is 1200022000031. The reversal of 1200022000011 is 1100002200021.

It is not a de Polignac number, because 1200022000011 - 2⁹ = 1200021999499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 133335777779 = 1200022000011 / (1 + 2 + 0 + 0 + 0 + 2 + 2 + 0 + 0 + 0 + 0 + 1 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 1200021999957 and 1200022000002.

It is not an unprimeable number, because it can be changed into a prime (1200022000031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66667888881 + ... + 66667888898.

It is an arithmetic number, because the mean of its divisors is an integer number (288894185190).

Almost surely, 2^{1200022000011} is an apocalyptic number.

1200022000011 is a deficient number, since it is larger than the sum of its proper divisors (533343111129).

1200022000011 is a wasteful number, since it uses less digits than its factorization.

1200022000011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133335777785 (or 133335777782 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1200022000011 its reverse (1100002200021), we get a palindrome (2300024200032).

The spelling of 1200022000011 in words is "one trillion, two hundred billion, twenty-two million, eleven", and thus it is an aban number.