12100213 has 4 divisors (see below), whose sum is σ = 12115980. Its totient is φ = 12084448.

The previous prime is 12100211. The next prime is 12100219. The reversal of 12100213 is 31200121.

12100213 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7091569 + 5008644 = 2663^2 + 2238^2 .

It is a cyclic number.

It is not a de Polignac number, because 12100213 - 2¹ = 12100211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12100213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6670 + ... + 8287.

It is an arithmetic number, because the mean of its divisors is an integer number (3028995).

Almost surely, 2^12100213 is an apocalyptic number.

It is an amenable number.

12100213 is a deficient number, since it is larger than the sum of its proper divisors (15767).

12100213 is an equidigital number, since it uses as much as digits as its factorization.

12100213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15766.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 12100213 is about 3478.5360426478. The cubic root of 12100213 is about 229.5783895636.

Adding to 12100213 its reverse (31200121), we get a palindrome (43300334).

The spelling of 12100213 in words is "twelve million, one hundred thousand, two hundred thirteen".