12211099 has 4 divisors (see below), whose sum is σ = 12242880. Its totient is φ = 12179320.

The previous prime is 12211079. The next prime is 12211103. The reversal of 12211099 is 99011221.

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

It is a cyclic number.

It is not a de Polignac number, because 12211099 - 2⁷ = 12210971 is a prime.

It is a super-2 number, since 2×12211099² = 298221877575602, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 5.

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (12211009) 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, 15307 + ... + 16084.

It is an arithmetic number, because the mean of its divisors is an integer number (3060720).

Almost surely, 2^12211099 is an apocalyptic number.

12211099 is a deficient number, since it is larger than the sum of its proper divisors (31781).

12211099 is an equidigital number, since it uses as much as digits as its factorization.

12211099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31780.

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 12211099 is about 3494.4382953488. The cubic root of 12211099 is about 230.2775414520.

The spelling of 12211099 in words is "twelve million, two hundred eleven thousand, ninety-nine".