1111220211011 has 4 divisors (see below), whose sum is σ = 1134863194272. Its totient is φ = 1087577227752.

The previous prime is 1111220210981. The next prime is 1111220211043. The reversal of 1111220211011 is 1101120221111.

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

It is not a de Polignac number, because 1111220211011 - 2²² = 1111216016707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111220211071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11821491560 + ... + 11821491653.

It is an arithmetic number, because the mean of its divisors is an integer number (283715798568).

Almost surely, 2^{1111220211011} is an apocalyptic number.

1111220211011 is a deficient number, since it is larger than the sum of its proper divisors (23642983261).

1111220211011 is an equidigital number, since it uses as much as digits as its factorization.

1111220211011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23642983260.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1111220211011 its reverse (1101120221111), we get a palindrome (2212340432122).

It can be divided in two parts, 1111220 and 211011, that added together give a palindrome (1322231).

The spelling of 1111220211011 in words is "one trillion, one hundred eleven billion, two hundred twenty million, two hundred eleven thousand, eleven".