12100156 has 12 divisors (see below), whose sum is σ = 21267792. Its totient is φ = 6023648.

The previous prime is 12100111. The next prime is 12100159. The reversal of 12100156 is 65100121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100159) 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 3 ways as a sum of consecutive naturals, for example, 5560 + ... + 7423.

It is an arithmetic number, because the mean of its divisors is an integer number (1772316).

Almost surely, 2^12100156 is an apocalyptic number.

It is an amenable number.

12100156 is a deficient number, since it is larger than the sum of its proper divisors (9167636).

12100156 is a wasteful number, since it uses less digits than its factorization.

12100156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13220 (or 13218 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 12100156 is about 3478.5278495364. The cubic root of 12100156 is about 229.5780290744.

Adding to 12100156 its reverse (65100121), we get a palindrome (77200277).

The spelling of 12100156 in words is "twelve million, one hundred thousand, one hundred fifty-six".