21119530 has 8 divisors (see below), whose sum is σ = 38015172. Its totient is φ = 8447808.

The previous prime is 21119503. The next prime is 21119531. The reversal of 21119530 is 3591112.

It can be written as a sum of positive squares in 2 ways, for example, as 21040569 + 78961 = 4587^2 + 281^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21119531) 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, 1055967 + ... + 1055986.

Almost surely, 2^21119530 is an apocalyptic number.

21119530 is a deficient number, since it is larger than the sum of its proper divisors (16895642).

21119530 is a wasteful number, since it uses less digits than its factorization.

21119530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111960.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 21119530 is about 4595.5989816345. The cubic root of 21119530 is about 276.4148787440.

The spelling of 21119530 in words is "twenty-one million, one hundred nineteen thousand, five hundred thirty".