1120221311111 has 4 divisors (see below), whose sum is σ = 1280252926992. Its totient is φ = 960189695232.

The previous prime is 1120221310991. The next prime is 1120221311113. The reversal of 1120221311111 is 1111131220211.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1120221311111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1120221311111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120221311113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80015807930 + ... + 80015807943.

It is an arithmetic number, because the mean of its divisors is an integer number (320063231748).

Almost surely, 2^{1120221311111} is an apocalyptic number.

1120221311111 is a deficient number, since it is larger than the sum of its proper divisors (160031615881).

1120221311111 is an equidigital number, since it uses as much as digits as its factorization.

1120221311111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160031615880.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 1120221311111 its reverse (1111131220211), we get a palindrome (2231352531322).

The spelling of 1120221311111 in words is "one trillion, one hundred twenty billion, two hundred twenty-one million, three hundred eleven thousand, one hundred eleven".