2122001111 has 8 divisors (see below), whose sum is σ = 2234247600. Its totient is φ = 2009810880.

The previous prime is 2122001099. The next prime is 2122001129. The reversal of 2122001111 is 1111002212.

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

It is not a de Polignac number, because 2122001111 - 2¹⁰ = 2122000087 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2122001092 and 2122001101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122001131) 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, 79331 + ... + 102651.

It is an arithmetic number, because the mean of its divisors is an integer number (279280950).

Almost surely, 2^2122001111 is an apocalyptic number.

2122001111 is a deficient number, since it is larger than the sum of its proper divisors (112246489).

2122001111 is a wasteful number, since it uses less digits than its factorization.

2122001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28129.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 2122001111 is about 46065.1832841247. The cubic root of 2122001111 is about 1285.0357272286.

Adding to 2122001111 its reverse (1111002212), we get a palindrome (3233003323).

The spelling of 2122001111 in words is "two billion, one hundred twenty-two million, one thousand, one hundred eleven".