21030130230 has 32 divisors (see below), whose sum is σ = 51424624224. Its totient is φ = 5502222336.

The previous prime is 21030130223. The next prime is 21030130237. The reversal of 21030130230 is 3203103012.

It is an interprime number because it is at equal distance from previous prime (21030130223) and next prime (21030130237).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21030130237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6611659 + ... + 6614838.

It is an arithmetic number, because the mean of its divisors is an integer number (1607019507).

Almost surely, 2^21030130230 is an apocalyptic number.

21030130230 is an abundant number, since it is smaller than the sum of its proper divisors (30394493994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21030130230 is a wasteful number, since it uses less digits than its factorization.

21030130230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13226560.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 21030130230 its reverse (3203103012), we get a palindrome (24233233242).

The spelling of 21030130230 in words is "twenty-one billion, thirty million, one hundred thirty thousand, two hundred thirty".