12501121 has 8 divisors (see below), whose sum is σ = 13089024. Its totient is φ = 11916960.

The previous prime is 12501067. The next prime is 12501169. The reversal of 12501121 is 12110521.

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 12501121 - 2¹⁵ = 12468353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12501191) 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, 7701 + ... + 9181.

It is an arithmetic number, because the mean of its divisors is an integer number (1636128).

Almost surely, 2^12501121 is an apocalyptic number.

It is an amenable number.

12501121 is a deficient number, since it is larger than the sum of its proper divisors (587903).

12501121 is a wasteful number, since it uses less digits than its factorization.

12501121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1871.

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

The square root of 12501121 is about 3535.6924357189. The cubic root of 12501121 is about 232.0863791014.

Adding to 12501121 its reverse (12110521), we get a palindrome (24611642).

The spelling of 12501121 in words is "twelve million, five hundred one thousand, one hundred twenty-one".