12211117 has 24 divisors (see below), whose sum is σ = 14146560. Its totient is φ = 10510080.

The previous prime is 12211103. The next prime is 12211123. The reversal of 12211117 is 71111221.

It is not a de Polignac number, because 12211117 - 2²³ = 3822509 is a prime.

It is a super-2 number, since 2×12211117² = 298222756775378, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12211117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 259788 + ... + 259834.

It is an arithmetic number, because the mean of its divisors is an integer number (589440).

Almost surely, 2^12211117 is an apocalyptic number.

12211117 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12211117 is a deficient number, since it is larger than the sum of its proper divisors (1935443).

12211117 is a wasteful number, since it uses less digits than its factorization.

12211117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 124 counting only the distinct ones).

The product of its digits is 28, while the sum is 16.

The square root of 12211117 is about 3494.4408708690. The cubic root of 12211117 is about 230.2776546003.

Adding to 12211117 its reverse (71111221), we get a palindrome (83322338).

The spelling of 12211117 in words is "twelve million, two hundred eleven thousand, one hundred seventeen".