12211379 has 4 divisors (see below), whose sum is σ = 12323520. Its totient is φ = 12099240.

The previous prime is 12211373. The next prime is 12211387. The reversal of 12211379 is 97311221.

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 12211379 - 2⁴ = 12211363 is a prime.

It is a super-4 number, since 4×12211379⁴ (a number of 29 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12211373) 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, 55907 + ... + 56124.

It is an arithmetic number, because the mean of its divisors is an integer number (3080880).

Almost surely, 2^12211379 is an apocalyptic number.

12211379 is a deficient number, since it is larger than the sum of its proper divisors (112141).

12211379 is a wasteful number, since it uses less digits than its factorization.

12211379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112140.

The product of its digits is 756, while the sum is 26.

The square root of 12211379 is about 3494.4783587826. The cubic root of 12211379 is about 230.2793015234.

The spelling of 12211379 in words is "twelve million, two hundred eleven thousand, three hundred seventy-nine".