12023021611 has 2 divisors, whose sum is σ = 12023021612. Its totient is φ = 12023021610.

The previous prime is 12023021603. The next prime is 12023021623. The reversal of 12023021611 is 11612032021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12023021611 - 2³ = 12023021603 is a prime.

It is not a weakly prime, because it can be changed into another prime (12023021641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6011510805 + 6011510806.

It is an arithmetic number, because the mean of its divisors is an integer number (6011510806).

Almost surely, 2^12023021611 is an apocalyptic number.

12023021611 is a deficient number, since it is larger than the sum of its proper divisors (1).

12023021611 is an equidigital number, since it uses as much as digits as its factorization.

12023021611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 12023021611 its reverse (11612032021), we get a palindrome (23635053632).

The spelling of 12023021611 in words is "twelve billion, twenty-three million, twenty-one thousand, six hundred eleven".