21404333230 has 32 divisors (see below), whose sum is σ = 44126125056. Its totient is φ = 7322902944.

The previous prime is 21404333189. The next prime is 21404333317. The reversal of 21404333230 is 3233340412.

It is a junction number, because it is equal to n+sod(n) for n = 21404333195 and 21404333204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 294694 + ... + 360073.

It is an arithmetic number, because the mean of its divisors is an integer number (1378941408).

Almost surely, 2^21404333230 is an apocalyptic number.

21404333230 is an abundant number, since it is smaller than the sum of its proper divisors (22721791826).

21404333230 is a wasteful number, since it uses less digits than its factorization.

21404333230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655248.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 21404333230 its reverse (3233340412), we get a palindrome (24637673642).

The spelling of 21404333230 in words is "twenty-one billion, four hundred four million, three hundred thirty-three thousand, two hundred thirty".