1111200022111 has 4 divisors (see below), whose sum is σ = 1176564729312. Its totient is φ = 1045835314912.

The previous prime is 1111200021979. The next prime is 1111200022151. The reversal of 1111200022111 is 1112200021111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1111200022111 - 2³³ = 1102610087519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111200022091 and 1111200022100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111200022151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32682353575 + ... + 32682353608.

It is an arithmetic number, because the mean of its divisors is an integer number (294141182328).

Almost surely, 2^{1111200022111} is an apocalyptic number.

1111200022111 is a deficient number, since it is larger than the sum of its proper divisors (65364707201).

1111200022111 is an equidigital number, since it uses as much as digits as its factorization.

1111200022111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65364707200.

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

Adding to 1111200022111 its reverse (1112200021111), we get a palindrome (2223400043222).

The spelling of 1111200022111 in words is "one trillion, one hundred eleven billion, two hundred million, twenty-two thousand, one hundred eleven".