12100638 has 16 divisors (see below), whose sum is σ = 26401536. Its totient is φ = 3666840.

The previous prime is 12100637. The next prime is 12100643. The reversal of 12100638 is 83600121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100637) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 91606 + ... + 91737.

It is an arithmetic number, because the mean of its divisors is an integer number (1650096).

Almost surely, 2^12100638 is an apocalyptic number.

12100638 is an abundant number, since it is smaller than the sum of its proper divisors (14300898).

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

12100638 is a wasteful number, since it uses less digits than its factorization.

12100638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183359.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 12100638 is about 3478.5971310285. The cubic root of 12100638 is about 229.5810773861.

Adding to 12100638 its reverse (83600121), we get a palindrome (95700759).

The spelling of 12100638 in words is "twelve million, one hundred thousand, six hundred thirty-eight".