2011122123 has 8 divisors (see below), whose sum is σ = 2681797008. Its totient is φ = 1340597664.

The previous prime is 2011122109. The next prime is 2011122137. The reversal of 2011122123 is 3212211102.

It is an interprime number because it is at equal distance from previous prime (2011122109) and next prime (2011122137).

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

It is not a de Polignac number, because 2011122123 - 2⁴ = 2011122107 is a prime.

It is a super-2 number, since 2×2011122123² = 8089224387240054258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2011122173) 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, 1440 + ... + 63437.

It is an arithmetic number, because the mean of its divisors is an integer number (335224626).

Almost surely, 2^2011122123 is an apocalyptic number.

2011122123 is a deficient number, since it is larger than the sum of its proper divisors (670674885).

2011122123 is a wasteful number, since it uses less digits than its factorization.

2011122123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75213.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2011122123 is about 44845.5362661659. The cubic root of 2011122123 is about 1262.2522334165.

Adding to 2011122123 its reverse (3212211102), we get a palindrome (5223333225).

The spelling of 2011122123 in words is "two billion, eleven million, one hundred twenty-two thousand, one hundred twenty-three".