12102211 has 8 divisors (see below), whose sum is σ = 13307904.
Its totient is φ = 10914120.
The previous prime is 12102199. The next prime is 12102239. The reversal of 12102211 is 11220121.
12102211 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 12102211 - 215 = 12069443 is a prime.
It is a super-2 number, since 2×121022112 = 292927022177042, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (12102241) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2935 + ... + 5728.
It is an arithmetic number, because the mean of its divisors is an integer number (1663488).
Almost surely, 212102211 is an apocalyptic number.
12102211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.
12102211 is a deficient number, since it is larger than the sum of its proper divisors (1205693).
12102211 is a wasteful number, since it uses less digits than its factorization.
12102211 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 8801.
The product of its (nonzero) digits is 8, while the sum is 10.
The square root of 12102211 is about 3478.8232205733.
The cubic root of 12102211 is about 229.5910249439.
Adding to 12102211 its reverse (11220121), we get a palindrome (23322332).
The spelling of 12102211 in words is "twelve million, one hundred two thousand, two hundred eleven".