12106558 has 4 divisors (see below), whose sum is σ = 18159840. Its totient is φ = 6053278.

The previous prime is 12106537. The next prime is 12106559. The reversal of 12106558 is 85560121.

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 (12106559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3026638 + ... + 3026641.

It is an arithmetic number, because the mean of its divisors is an integer number (4539960).

Almost surely, 2^12106558 is an apocalyptic number.

12106558 is a deficient number, since it is larger than the sum of its proper divisors (6053282).

12106558 is an equidigital number, since it uses as much as digits as its factorization.

12106558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6053281.

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 12106558 is about 3479.4479447177. The cubic root of 12106558 is about 229.6185106299.

Adding to 12106558 its reverse (85560121), we get a palindrome (97666679).

The spelling of 12106558 in words is "twelve million, one hundred six thousand, five hundred fifty-eight".