2111222021111 has 8 divisors (see below), whose sum is σ = 2413382822400. Its totient is φ = 1809200633688.

The previous prime is 2111222021093. The next prime is 2111222021113. The reversal of 2111222021111 is 1111202221112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2111222021111 - 2¹⁰ = 2111222020087 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 2111222021111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111222021113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34821011 + ... + 34881588.

It is an arithmetic number, because the mean of its divisors is an integer number (301672852800).

Almost surely, 2^{2111222021111} is an apocalyptic number.

2111222021111 is a deficient number, since it is larger than the sum of its proper divisors (302160801289).

2111222021111 is an equidigital number, since it uses as much as digits as its factorization.

2111222021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69706933.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 2111222021111 its reverse (1111202221112), we get a palindrome (3222424242223).

The spelling of 2111222021111 in words is "two trillion, one hundred eleven billion, two hundred twenty-two million, twenty-one thousand, one hundred eleven".