11130021 has 16 divisors (see below), whose sum is σ = 18844800. Its totient is φ = 6359904.

The previous prime is 11130001. The next prime is 11130043. The reversal of 11130021 is 12003111.

11130021 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11130021 - 2⁶ = 11129957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 11129985 and 11130012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11130001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29256 + ... + 29633.

It is an arithmetic number, because the mean of its divisors is an integer number (1177800).

Almost surely, 2^11130021 is an apocalyptic number.

It is an amenable number.

11130021 is a deficient number, since it is larger than the sum of its proper divisors (7714779).

11130021 is an equidigital number, since it uses as much as digits as its factorization.

11130021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58905 (or 58899 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 11130021 is about 3336.1686108469. The cubic root of 11130021 is about 223.2708339754.

Adding to 11130021 its reverse (12003111), we get a palindrome (23133132).

The spelling of 11130021 in words is "eleven million, one hundred thirty thousand, twenty-one".