21441022430 has 16 divisors (see below), whose sum is σ = 38705068080. Its totient is φ = 8551691712.

The previous prime is 21441022417. The next prime is 21441022433. The reversal of 21441022430 is 3422014412.

It is a junction number, because it is equal to n+sod(n) for n = 21441022396 and 21441022405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21441022433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3086015 + ... + 3092954.

It is an arithmetic number, because the mean of its divisors is an integer number (2419066755).

Almost surely, 2^21441022430 is an apocalyptic number.

21441022430 is a deficient number, since it is larger than the sum of its proper divisors (17264045650).

21441022430 is a wasteful number, since it uses less digits than its factorization.

21441022430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6179323.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 21441022430 its reverse (3422014412), we get a palindrome (24863036842).

The spelling of 21441022430 in words is "twenty-one billion, four hundred forty-one million, twenty-two thousand, four hundred thirty".