21224903830 has 16 divisors (see below), whose sum is σ = 41143659984. Its totient is φ = 7836887520.

The previous prime is 21224903807. The next prime is 21224903867. The reversal of 21224903830 is 3830942212.

It is a happy number.

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, 81634116 + ... + 81634375.

It is an arithmetic number, because the mean of its divisors is an integer number (2571478749).

Almost surely, 2^21224903830 is an apocalyptic number.

21224903830 is a deficient number, since it is larger than the sum of its proper divisors (19918756154).

21224903830 is a wasteful number, since it uses less digits than its factorization.

21224903830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163268511.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 21224903830 in words is "twenty-one billion, two hundred twenty-four million, nine hundred three thousand, eight hundred thirty".