12100864 has 18 divisors (see below), whose sum is σ = 24154970. Its totient is φ = 6050304.

The previous prime is 12100861. The next prime is 12100867. The reversal of 12100864 is 46800121.

It is an interprime number because it is at equal distance from previous prime (12100861) and next prime (12100867).

It can be written as a sum of positive squares in only one way, i.e., 6718464 + 5382400 = 2592^2 + 2320^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23379 + ... + 23890.

Almost surely, 2^12100864 is an apocalyptic number.

It is an amenable number.

12100864 is a deficient number, since it is larger than the sum of its proper divisors (12054106).

12100864 is an frugal number, since it uses more digits than its factorization.

12100864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47285 (or 47271 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 12100864 is about 3478.6296152364. The cubic root of 12100864 is about 229.5825066496.

Adding to 12100864 its reverse (46800121), we get a palindrome (58900985).

The spelling of 12100864 in words is "twelve million, one hundred thousand, eight hundred sixty-four".