11219121 has 8 divisors (see below), whose sum is σ = 16620960. Its totient is φ = 7479396.

The previous prime is 11219119. The next prime is 11219123. The reversal of 11219121 is 12191211.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11219119) and next prime (11219123).

It is not a de Polignac number, because 11219121 - 2¹ = 11219119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11219094 and 11219103.

It is not an unprimeable number, because it can be changed into a prime (11219123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207735 + ... + 207788.

It is an arithmetic number, because the mean of its divisors is an integer number (2077620).

Almost surely, 2^11219121 is an apocalyptic number.

It is an amenable number.

11219121 is a deficient number, since it is larger than the sum of its proper divisors (5401839).

11219121 is an equidigital number, since it uses as much as digits as its factorization.

11219121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415532 (or 415526 counting only the distinct ones).

The product of its digits is 36, while the sum is 18.

The square root of 11219121 is about 3349.4956336738. The cubic root of 11219121 is about 223.8650401423.

The spelling of 11219121 in words is "eleven million, two hundred nineteen thousand, one hundred twenty-one".