23231122666 has 4 divisors (see below), whose sum is σ = 34846684002. Its totient is φ = 11615561332.

The previous prime is 23231122639. The next prime is 23231122667. The reversal of 23231122666 is 66622113232.

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

It can be written as a sum of positive squares in only one way, i.e., 20219418025 + 3011704641 = 142195^2 + 54879^2 .

It is not an unprimeable number, because it can be changed into a prime (23231122667) 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 as a sum of consecutive naturals, namely, 5807780665 + ... + 5807780668.

Almost surely, 2^23231122666 is an apocalyptic number.

23231122666 is a deficient number, since it is larger than the sum of its proper divisors (11615561336).

23231122666 is a wasteful number, since it uses less digits than its factorization.

23231122666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11615561335.

The product of its digits is 31104, while the sum is 34.

Adding to 23231122666 its reverse (66622113232), we get a palindrome (89853235898).

The spelling of 23231122666 in words is "twenty-three billion, two hundred thirty-one million, one hundred twenty-two thousand, six hundred sixty-six".