2012011123 has 4 divisors (see below), whose sum is σ = 2066389840. Its totient is φ = 1957632408.

The previous prime is 2012011121. The next prime is 2012011159. The reversal of 2012011123 is 3211102102.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2012011123 - 2¹ = 2012011121 is a prime.

It is a super-2 number, since 2×2012011123² = 8096377518151442258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012011121) 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, 27189303 + ... + 27189376.

It is an arithmetic number, because the mean of its divisors is an integer number (516597460).

Almost surely, 2^2012011123 is an apocalyptic number.

2012011123 is a deficient number, since it is larger than the sum of its proper divisors (54378717).

2012011123 is an equidigital number, since it uses as much as digits as its factorization.

2012011123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54378716.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2012011123 is about 44855.4469713545. The cubic root of 2012011123 is about 1262.4381954256.

Adding to 2012011123 its reverse (3211102102), we get a palindrome (5223113225).

The spelling of 2012011123 in words is "two billion, twelve million, eleven thousand, one hundred twenty-three".