11413121 has 4 divisors (see below), whose sum is σ = 11524032. Its totient is φ = 11302212.

The previous prime is 11413111. The next prime is 11413123. The reversal of 11413121 is 12131411.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12131411 = 379 ⋅32009.

It is a cyclic number.

It is not a de Polignac number, because 11413121 - 2¹⁸ = 11150977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11413096 and 11413105.

It is not an unprimeable number, because it can be changed into a prime (11413123) 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, 55301 + ... + 55506.

It is an arithmetic number, because the mean of its divisors is an integer number (2881008).

Almost surely, 2^11413121 is an apocalyptic number.

It is an amenable number.

11413121 is a deficient number, since it is larger than the sum of its proper divisors (110911).

11413121 is a wasteful number, since it uses less digits than its factorization.

11413121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110910.

The product of its digits is 24, while the sum is 14.

The square root of 11413121 is about 3378.3310968583. The cubic root of 11413121 is about 225.1480244061.

Adding to 11413121 its reverse (12131411), we get a palindrome (23544532).

The spelling of 11413121 in words is "eleven million, four hundred thirteen thousand, one hundred twenty-one".