21423321130 has 8 divisors (see below), whose sum is σ = 38561978052. Its totient is φ = 8569328448.

The previous prime is 21423321113. The next prime is 21423321133. The reversal of 21423321130 is 3112332412.

It can be written as a sum of positive squares in 2 ways, for example, as 20871869841 + 551451289 = 144471^2 + 23483^2 .

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 (21423321133) 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, 1071166047 + ... + 1071166066.

Almost surely, 2^21423321130 is an apocalyptic number.

21423321130 is a deficient number, since it is larger than the sum of its proper divisors (17138656922).

21423321130 is a wasteful number, since it uses less digits than its factorization.

21423321130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2142332120.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21423321130 its reverse (3112332412), we get a palindrome (24535653542).

The spelling of 21423321130 in words is "twenty-one billion, four hundred twenty-three million, three hundred twenty-one thousand, one hundred thirty".