11121730 has 16 divisors (see below), whose sum is σ = 20071800. Its totient is φ = 4436992.

The previous prime is 11121713. The next prime is 11121731. The reversal of 11121730 is 3712111.

It can be written as a sum of positive squares in 4 ways, for example, as 9381969 + 1739761 = 3063^2 + 1319^2 .

It is not an unprimeable number, because it can be changed into a prime (11121731) 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, 3252 + ... + 5728.

Almost surely, 2^11121730 is an apocalyptic number.

11121730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11121730 is a deficient number, since it is larger than the sum of its proper divisors (8950070).

11121730 is a wasteful number, since it uses less digits than its factorization.

11121730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2933.

The product of its (nonzero) digits is 42, while the sum is 16.

The square root of 11121730 is about 3334.9257862807. The cubic root of 11121730 is about 223.2153804015.

Adding to 11121730 its reverse (3712111), we get a palindrome (14833841).

The spelling of 11121730 in words is "eleven million, one hundred twenty-one thousand, seven hundred thirty".