12211265 has 8 divisors (see below), whose sum is σ = 15985728. Its totient is φ = 8880880.

The previous prime is 12211261. The next prime is 12211273. The reversal of 12211265 is 56211221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12211265 - 2² = 12211261 is a prime.

It is a super-3 number, since 3×12211265³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (12211261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110957 + ... + 111066.

It is an arithmetic number, because the mean of its divisors is an integer number (1998216).

Almost surely, 2^12211265 is an apocalyptic number.

It is an amenable number.

12211265 is a deficient number, since it is larger than the sum of its proper divisors (3774463).

12211265 is a wasteful number, since it uses less digits than its factorization.

12211265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222039.

The product of its digits is 240, while the sum is 20.

The square root of 12211265 is about 3494.4620472971. The cubic root of 12211265 is about 230.2785849262.

Adding to 12211265 its reverse (56211221), we get a palindrome (68422486).

The spelling of 12211265 in words is "twelve million, two hundred eleven thousand, two hundred sixty-five".