12123335011 has 4 divisors (see below), whose sum is σ = 12450992752. Its totient is φ = 11795677272.

The previous prime is 12123334981. The next prime is 12123335027. The reversal of 12123335011 is 11053332121.

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

It is a cyclic number.

It is not a de Polignac number, because 12123335011 - 2²¹ = 12121237859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12123315011) 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, 163828815 + ... + 163828888.

It is an arithmetic number, because the mean of its divisors is an integer number (3112748188).

Almost surely, 2^12123335011 is an apocalyptic number.

12123335011 is a deficient number, since it is larger than the sum of its proper divisors (327657741).

12123335011 is an equidigital number, since it uses as much as digits as its factorization.

12123335011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327657740.

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 12123335011 its reverse (11053332121), we get a palindrome (23176667132).

The spelling of 12123335011 in words is "twelve billion, one hundred twenty-three million, three hundred thirty-five thousand, eleven".