21130067 has 8 divisors (see below), whose sum is σ = 24981600. Its totient is φ = 17486784.

The previous prime is 21130049. The next prime is 21130073. The reversal of 21130067 is 76003112.

It is a happy number.

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

It is not a de Polignac number, because 21130067 - 2⁸ = 21129811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21130027) 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, 51842 + ... + 52247.

It is an arithmetic number, because the mean of its divisors is an integer number (3122700).

Almost surely, 2^21130067 is an apocalyptic number.

21130067 is a deficient number, since it is larger than the sum of its proper divisors (3851533).

21130067 is a wasteful number, since it uses less digits than its factorization.

21130067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104125.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 21130067 is about 4596.7452615954. The cubic root of 21130067 is about 276.4608409305.

Adding to 21130067 its reverse (76003112), we get a palindrome (97133179).

The spelling of 21130067 in words is "twenty-one million, one hundred thirty thousand, sixty-seven".