21202414430 has 16 divisors (see below), whose sum is σ = 38176869024. Its totient is φ = 8478182880.

The previous prime is 21202414423. The next prime is 21202414451. The reversal of 21202414430 is 3441420212.

It is a super-2 number, since 2×21202414430² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21202414396 and 21202414405.

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, 315722 + ... + 376941.

It is an arithmetic number, because the mean of its divisors is an integer number (2386054314).

Almost surely, 2^21202414430 is an apocalyptic number.

21202414430 is a deficient number, since it is larger than the sum of its proper divisors (16974454594).

21202414430 is a wasteful number, since it uses less digits than its factorization.

21202414430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695731.

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

Adding to 21202414430 its reverse (3441420212), we get a palindrome (24643834642).

The spelling of 21202414430 in words is "twenty-one billion, two hundred two million, four hundred fourteen thousand, four hundred thirty".