13880121 has 4 divisors (see below), whose sum is σ = 18506832. Its totient is φ = 9253412.

The previous prime is 13880101. The next prime is 13880149. The reversal of 13880121 is 12108831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13880121 - 2⁶ = 13880057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13880091 and 13880100.

It is not an unprimeable number, because it can be changed into a prime (13880101) 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, 2313351 + ... + 2313356.

It is an arithmetic number, because the mean of its divisors is an integer number (4626708).

Almost surely, 2^13880121 is an apocalyptic number.

It is an amenable number.

13880121 is a deficient number, since it is larger than the sum of its proper divisors (4626711).

13880121 is an equidigital number, since it uses as much as digits as its factorization.

13880121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4626710.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 13880121 is about 3725.6034410549. The cubic root of 13880121 is about 240.3243358010.

Adding to 13880121 its reverse (12108831), we get a palindrome (25988952).

The spelling of 13880121 in words is "thirteen million, eight hundred eighty thousand, one hundred twenty-one".