21250304104430 has 16 divisors (see below), whose sum is σ = 39913614666144. Its totient is φ = 8130551135520.

The previous prime is 21250304104391. The next prime is 21250304104481. The reversal of 21250304104430 is 3440140305212.

It is a junction number, because it is equal to n+sod(n) for n = 21250304104393 and 21250304104402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46196313041 + ... + 46196313500.

It is an arithmetic number, because the mean of its divisors is an integer number (2494600916634).

Almost surely, 2^{21250304104430} is an apocalyptic number.

21250304104430 is a deficient number, since it is larger than the sum of its proper divisors (18663310561714).

21250304104430 is a wasteful number, since it uses less digits than its factorization.

21250304104430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92392626571.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 21250304104430 its reverse (3440140305212), we get a palindrome (24690444409642).

The spelling of 21250304104430 in words is "twenty-one trillion, two hundred fifty billion, three hundred four million, one hundred four thousand, four hundred thirty".