12153211 has 4 divisors (see below), whose sum is σ = 13889392. Its totient is φ = 10417032.

The previous prime is 12153203. The next prime is 12153221. The reversal of 12153211 is 11235121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12153211 - 2³ = 12153203 is a prime.

It is a super-2 number, since 2×12153211² = 295401075221042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12153221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 868080 + ... + 868093.

It is an arithmetic number, because the mean of its divisors is an integer number (3472348).

Almost surely, 2^12153211 is an apocalyptic number.

12153211 is a deficient number, since it is larger than the sum of its proper divisors (1736181).

12153211 is an equidigital number, since it uses as much as digits as its factorization.

12153211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736180.

The product of its digits is 60, while the sum is 16.

The square root of 12153211 is about 3486.1455792895. The cubic root of 12153211 is about 229.9130799473.

Adding to 12153211 its reverse (11235121), we get a palindrome (23388332).

The spelling of 12153211 in words is "twelve million, one hundred fifty-three thousand, two hundred eleven".