12152111 has 4 divisors (see below), whose sum is σ = 12177552. Its totient is φ = 12126672.

The previous prime is 12152099. The next prime is 12152137. The reversal of 12152111 is 11125121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11125121 = 7 ⋅1589303.

It is a cyclic number.

It is not a de Polignac number, because 12152111 - 2⁶ = 12152047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12152141) 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, 11990 + ... + 12963.

It is an arithmetic number, because the mean of its divisors is an integer number (3044388).

Almost surely, 2^12152111 is an apocalyptic number.

12152111 is a deficient number, since it is larger than the sum of its proper divisors (25441).

12152111 is an equidigital number, since it uses as much as digits as its factorization.

12152111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25440.

The product of its digits is 20, while the sum is 14.

The square root of 12152111 is about 3485.9878083550. The cubic root of 12152111 is about 229.9061431792.

Adding to 12152111 its reverse (11125121), we get a palindrome (23277232).

The spelling of 12152111 in words is "twelve million, one hundred fifty-two thousand, one hundred eleven".