21422240030 has 8 divisors (see below), whose sum is σ = 38560032072. Its totient is φ = 8568896008.

The previous prime is 21422240017. The next prime is 21422240033. The reversal of 21422240030 is 3004222412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21422239984 and 21422240011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21422240033) 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, 1071111992 + ... + 1071112011.

It is an arithmetic number, because the mean of its divisors is an integer number (4820004009).

Almost surely, 2^21422240030 is an apocalyptic number.

21422240030 is a deficient number, since it is larger than the sum of its proper divisors (17137792042).

21422240030 is a wasteful number, since it uses less digits than its factorization.

21422240030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2142224010.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 21422240030 its reverse (3004222412), we get a palindrome (24426462442).

The spelling of 21422240030 in words is "twenty-one billion, four hundred twenty-two million, two hundred forty thousand, thirty".