21010422430 has 8 divisors (see below), whose sum is σ = 37818760392. Its totient is φ = 8404168968.

The previous prime is 21010422413. The next prime is 21010422437. The reversal of 21010422430 is 3422401012.

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 = 21010422398 and 21010422407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010422437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1050521112 + ... + 1050521131.

It is an arithmetic number, because the mean of its divisors is an integer number (4727345049).

Almost surely, 2^21010422430 is an apocalyptic number.

21010422430 is a deficient number, since it is larger than the sum of its proper divisors (16808337962).

21010422430 is a wasteful number, since it uses less digits than its factorization.

21010422430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2101042250.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 21010422430 its reverse (3422401012), we get a palindrome (24432823442).

The spelling of 21010422430 in words is "twenty-one billion, ten million, four hundred twenty-two thousand, four hundred thirty".