12521206 has 4 divisors (see below), whose sum is σ = 18781812. Its totient is φ = 6260602.

The previous prime is 12521203. The next prime is 12521219. The reversal of 12521206 is 60212521.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12521203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3130300 + ... + 3130303.

It is an arithmetic number, because the mean of its divisors is an integer number (4695453).

Almost surely, 2^12521206 is an apocalyptic number.

12521206 is a deficient number, since it is larger than the sum of its proper divisors (6260606).

12521206 is an equidigital number, since it uses as much as digits as its factorization.

12521206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6260605.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 12521206 is about 3538.5316163629. The cubic root of 12521206 is about 232.2106069126.

Adding to 12521206 its reverse (60212521), we get a palindrome (72733727).

The spelling of 12521206 in words is "twelve million, five hundred twenty-one thousand, two hundred six".