2111220011111 has 4 divisors (see below), whose sum is σ = 2111281295400. Its totient is φ = 2111158726824.

The previous prime is 2111220011093. The next prime is 2111220011119. The reversal of 2111220011111 is 1111100221112.

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 2111220011111 - 2¹⁴ = 2111219994727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111220011119) 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, 30590441 + ... + 30659378.

It is an arithmetic number, because the mean of its divisors is an integer number (527820323850).

Almost surely, 2^{2111220011111} is an apocalyptic number.

2111220011111 is a deficient number, since it is larger than the sum of its proper divisors (61284289).

2111220011111 is an equidigital number, since it uses as much as digits as its factorization.

2111220011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61284288.

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

Adding to 2111220011111 its reverse (1111100221112), we get a palindrome (3222320232223).

The spelling of 2111220011111 in words is "two trillion, one hundred eleven billion, two hundred twenty million, eleven thousand, one hundred eleven".