12123542011 has 8 divisors (see below), whose sum is σ = 13875948000. Its totient is φ = 10376253888.

The previous prime is 12123542009. The next prime is 12123542033. The reversal of 12123542011 is 11024532121.

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

It is not a de Polignac number, because 12123542011 - 2¹ = 12123542009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12123542111) 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, 1274386 + ... + 1283863.

It is an arithmetic number, because the mean of its divisors is an integer number (1734493500).

Almost surely, 2^12123542011 is an apocalyptic number.

12123542011 is a deficient number, since it is larger than the sum of its proper divisors (1752405989).

12123542011 is an equidigital number, since it uses as much as digits as its factorization.

12123542011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2558933.

The product of its (nonzero) digits is 480, while the sum is 22.

The spelling of 12123542011 in words is "twelve billion, one hundred twenty-three million, five hundred forty-two thousand, eleven".