12201511 has 8 divisors (see below), whose sum is σ = 14006304. Its totient is φ = 10412160.

The previous prime is 12201509. The next prime is 12201557. The reversal of 12201511 is 11510221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12201511 - 2¹ = 12201509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12201491 and 12201500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2110 + ... + 5371.

It is an arithmetic number, because the mean of its divisors is an integer number (1750788).

Almost surely, 2^12201511 is an apocalyptic number.

12201511 is a deficient number, since it is larger than the sum of its proper divisors (1804793).

12201511 is an equidigital number, since it uses as much as digits as its factorization.

12201511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7721.

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 12201511 is about 3493.0661316385. The cubic root of 12201511 is about 230.2172553360.

Adding to 12201511 its reverse (11510221), we get a palindrome (23711732).

The spelling of 12201511 in words is "twelve million, two hundred one thousand, five hundred eleven".