12211258 has 16 divisors (see below), whose sum is σ = 19217664. Its totient is φ = 5812560.

The previous prime is 12211249. The next prime is 12211259. The reversal of 12211258 is 85211221.

12211258 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12211258² = 298229643885128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12211259) 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, 1723 + ... + 5233.

It is an arithmetic number, because the mean of its divisors is an integer number (1201104).

Almost surely, 2^12211258 is an apocalyptic number.

12211258 is a deficient number, since it is larger than the sum of its proper divisors (7006406).

12211258 is a wasteful number, since it uses less digits than its factorization.

12211258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3597.

The product of its digits is 320, while the sum is 22.

The square root of 12211258 is about 3494.4610457122. The cubic root of 12211258 is about 230.2785409244.

Adding to 12211258 its reverse (85211221), we get a palindrome (97422479).

The spelling of 12211258 in words is "twelve million, two hundred eleven thousand, two hundred fifty-eight".