1200011121211 has 32 divisors (see below), whose sum is σ = 1486091819520. Its totient is φ = 945430811136.

The previous prime is 1200011121187. The next prime is 1200011121227. The reversal of 1200011121211 is 1121211100021.

It is a happy number.

It is not a de Polignac number, because 1200011121211 - 2²³ = 1200002732603 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1200011121191 and 1200011121200.

It is not an unprimeable number, because it can be changed into a prime (1200011124211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54172840 + ... + 54194986.

It is an arithmetic number, because the mean of its divisors is an integer number (46440369360).

Almost surely, 2^{1200011121211} is an apocalyptic number.

1200011121211 is a deficient number, since it is larger than the sum of its proper divisors (286080698309).

1200011121211 is a wasteful number, since it uses less digits than its factorization.

1200011121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32803.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1200011121211 its reverse (1121211100021), we get a palindrome (2321222221232).

The spelling of 1200011121211 in words is "one trillion, two hundred billion, eleven million, one hundred twenty-one thousand, two hundred eleven".