12211000 has 32 divisors (see below), whose sum is σ = 28576080. Its totient is φ = 4884000.

The previous prime is 12210983. The next prime is 12211009. The reversal of 12211000 is 11221.

12211000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211009) 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, 5106 + ... + 7105.

Almost surely, 2^12211000 is an apocalyptic number.

12211000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12211000 is an abundant number, since it is smaller than the sum of its proper divisors (16365080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12211000 is a wasteful number, since it uses less digits than its factorization.

12211000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12232 (or 12218 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 12211000 is about 3494.4241299533. The cubic root of 12211000 is about 230.2769191346.

Adding to 12211000 its reverse (11221), we get a palindrome (12222221).

The spelling of 12211000 in words is "twelve million, two hundred eleven thousand".