12099157 has 4 divisors (see below), whose sum is σ = 13827616. Its totient is φ = 10370700.

The previous prime is 12099151. The next prime is 12099161. The reversal of 12099157 is 75199021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12099157 - 2¹¹ = 12097109 is a prime.

It is a super-2 number, since 2×12099157² = 292779200221298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12099151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 864219 + ... + 864232.

It is an arithmetic number, because the mean of its divisors is an integer number (3456904).

Almost surely, 2^12099157 is an apocalyptic number.

It is an amenable number.

12099157 is a deficient number, since it is larger than the sum of its proper divisors (1728459).

12099157 is an equidigital number, since it uses as much as digits as its factorization.

12099157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728458.

The product of its (nonzero) digits is 5670, while the sum is 34.

The square root of 12099157 is about 3478.3842513443. The cubic root of 12099157 is about 229.5717108428.

The spelling of 12099157 in words is "twelve million, ninety-nine thousand, one hundred fifty-seven".