23121066 has 8 divisors (see below), whose sum is σ = 46242144. Its totient is φ = 7707020.

The previous prime is 23121053. The next prime is 23121073. The reversal of 23121066 is 66012132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

23121066 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1926750 + ... + 1926761.

It is an arithmetic number, because the mean of its divisors is an integer number (5780268).

Almost surely, 2^23121066 is an apocalyptic number.

23121066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23121066 is a wasteful number, since it uses less digits than its factorization.

23121066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3853516.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 23121066 is about 4808.4369601774. The cubic root of 23121066 is about 284.8848041679.

Adding to 23121066 its reverse (66012132), we get a palindrome (89133198).

The spelling of 23121066 in words is "twenty-three million, one hundred twenty-one thousand, sixty-six".