12230011661 has 16 divisors (see below), whose sum is σ = 14275872000. Its totient is φ = 10259803008.

The previous prime is 12230011649. The next prime is 12230011663. The reversal of 12230011661 is 16611003221.

It is a de Polignac number, because none of the positive numbers 2^k-12230011661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12230011663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111440 + ... + 192038.

It is an arithmetic number, because the mean of its divisors is an integer number (892242000).

Almost surely, 2^12230011661 is an apocalyptic number.

It is an amenable number.

12230011661 is a deficient number, since it is larger than the sum of its proper divisors (2045860339).

12230011661 is an equidigital number, since it uses as much as digits as its factorization.

12230011661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81068.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 12230011661 its reverse (16611003221), we get a palindrome (28841014882).

The spelling of 12230011661 in words is "twelve billion, two hundred thirty million, eleven thousand, six hundred sixty-one".