12205151 has 4 divisors (see below), whose sum is σ = 13948752. Its totient is φ = 10461552.

The previous prime is 12205121. The next prime is 12205159. The reversal of 12205151 is 15150221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12205151 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 (12205159) 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, 871790 + ... + 871803.

It is an arithmetic number, because the mean of its divisors is an integer number (3487188).

Almost surely, 2^12205151 is an apocalyptic number.

12205151 is a deficient number, since it is larger than the sum of its proper divisors (1743601).

12205151 is an equidigital number, since it uses as much as digits as its factorization.

12205151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1743600.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 12205151 is about 3493.5871250049. The cubic root of 12205151 is about 230.2401461483.

Adding to 12205151 its reverse (15150221), we get a palindrome (27355372).

The spelling of 12205151 in words is "twelve million, two hundred five thousand, one hundred fifty-one".