12401121 has 8 divisors (see below), whose sum is σ = 16646400. Its totient is φ = 8211632.

The previous prime is 12401111. The next prime is 12401141. The reversal of 12401121 is 12110421.

It is a happy number.

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 12401121 - 2¹⁰ = 12400097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12401097 and 12401106.

It is not an unprimeable number, because it can be changed into a prime (12401101) 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, 13425 + ... + 14318.

It is an arithmetic number, because the mean of its divisors is an integer number (2080800).

Almost surely, 2^12401121 is an apocalyptic number.

It is an amenable number.

12401121 is a deficient number, since it is larger than the sum of its proper divisors (4245279).

12401121 is a wasteful number, since it uses less digits than its factorization.

12401121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27895.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 12401121 is about 3521.5225400386. The cubic root of 12401121 is about 231.4658801196.

Adding to 12401121 its reverse (12110421), we get a palindrome (24511542).

The spelling of 12401121 in words is "twelve million, four hundred one thousand, one hundred twenty-one".