23121466 has 4 divisors (see below), whose sum is σ = 34682202. Its totient is φ = 11560732.

The previous prime is 23121457. The next prime is 23121473. The reversal of 23121466 is 66412132.

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., 17015625 + 6105841 = 4125^2 + 2471^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23121466.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5780365 + ... + 5780368.

Almost surely, 2^23121466 is an apocalyptic number.

23121466 is a deficient number, since it is larger than the sum of its proper divisors (11560736).

23121466 is a wasteful number, since it uses less digits than its factorization.

23121466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11560735.

The product of its digits is 1728, while the sum is 25.

The square root of 23121466 is about 4808.4785535552. The cubic root of 23121466 is about 284.8864470169.

Adding to 23121466 its reverse (66412132), we get a palindrome (89533598).

The spelling of 23121466 in words is "twenty-three million, one hundred twenty-one thousand, four hundred sixty-six".