130221424 has 20 divisors (see below), whose sum is σ = 257066136. Its totient is φ = 63881792.

The previous prime is 130221409. The next prime is 130221431. The reversal of 130221424 is 424122031.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75934 + ... + 77629.

Almost surely, 2^130221424 is an apocalyptic number.

It is an amenable number.

130221424 is a deficient number, since it is larger than the sum of its proper divisors (126844712).

130221424 is a wasteful number, since it uses less digits than its factorization.

130221424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153624 (or 153618 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 130221424 is about 11411.4602045488. The cubic root of 130221424 is about 506.8671513454.

Adding to 130221424 its reverse (424122031), we get a palindrome (554343455).

It can be divided in two parts, 1 and 30221424, that added together give a triangular number (30221425 = T₇₇₇₄).

The spelling of 130221424 in words is "one hundred thirty million, two hundred twenty-one thousand, four hundred twenty-four".