1111011111211 has 4 divisors (see below), whose sum is σ = 1111532959800. Its totient is φ = 1110489262624.

The previous prime is 1111011111163. The next prime is 1111011111227. The reversal of 1111011111211 is 1121111101111.

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 1111011111211 - 2²⁹ = 1110474240299 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111011111191 and 1111011111200.

It is not an unprimeable number, because it can be changed into a prime (1111011111611) 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, 260921101 + ... + 260925358.

It is an arithmetic number, because the mean of its divisors is an integer number (277883239950).

Almost surely, 2^{1111011111211} is an apocalyptic number.

1111011111211 is a deficient number, since it is larger than the sum of its proper divisors (521848589).

1111011111211 is an equidigital number, since it uses as much as digits as its factorization.

1111011111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521848588.

The product of its (nonzero) digits is 2, while the sum is 13.

Adding to 1111011111211 its reverse (1121111101111), we get a palindrome (2232122212322).

The spelling of 1111011111211 in words is "one trillion, one hundred eleven billion, eleven million, one hundred eleven thousand, two hundred eleven".