21224348608 has 28 divisors (see below), whose sum is σ = 42360540120. Its totient is φ = 10550826752.

The previous prime is 21224348447. The next prime is 21224348609. The reversal of 21224348608 is 80684342212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21224348609) 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, 947398 + ... + 969541.

Almost surely, 2^21224348608 is an apocalyptic number.

It is an amenable number.

21224348608 is a deficient number, since it is larger than the sum of its proper divisors (21136191512).

21224348608 is a wasteful number, since it uses less digits than its factorization.

21224348608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917124 (or 1917114 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 40.

The spelling of 21224348608 in words is "twenty-one billion, two hundred twenty-four million, three hundred forty-eight thousand, six hundred eight".