2111122005 has 16 divisors (see below), whose sum is σ = 3378473664. Its totient is φ = 1125705600.

The previous prime is 2111122003. The next prime is 2111122031. The reversal of 2111122005 is 5002211112.

It is not a de Polignac number, because 2111122005 - 2¹ = 2111122003 is a prime.

It is a super-2 number, since 2×2111122005² = 8913672239990440050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111122003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85857 + ... + 107673.

It is an arithmetic number, because the mean of its divisors is an integer number (211154604).

Almost surely, 2^2111122005 is an apocalyptic number.

It is an amenable number.

2111122005 is a deficient number, since it is larger than the sum of its proper divisors (1267351659).

2111122005 is a wasteful number, since it uses less digits than its factorization.

2111122005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28276.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 2111122005 is about 45946.9477223460. The cubic root of 2111122005 is about 1282.8359170083.

Adding to 2111122005 its reverse (5002211112), we get a palindrome (7113333117).

The spelling of 2111122005 in words is "two billion, one hundred eleven million, one hundred twenty-two thousand, five".