130021567 has 4 divisors (see below), whose sum is σ = 140023240. Its totient is φ = 120019896.

The previous prime is 130021547. The next prime is 130021571. The reversal of 130021567 is 765120031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130021567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130021517) 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, 5000817 + ... + 5000842.

It is an arithmetic number, because the mean of its divisors is an integer number (35005810).

Almost surely, 2^130021567 is an apocalyptic number.

130021567 is a deficient number, since it is larger than the sum of its proper divisors (10001673).

130021567 is a wasteful number, since it uses less digits than its factorization.

130021567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10001672.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 130021567 is about 11402.6999872837. The cubic root of 130021567 is about 506.6077142186.

Adding to 130021567 its reverse (765120031), we get a palindrome (895141598).

The spelling of 130021567 in words is "one hundred thirty million, twenty-one thousand, five hundred sixty-seven".