21700224484 has 6 divisors (see below), whose sum is σ = 37975392854. Its totient is φ = 10850112240.

The previous prime is 21700224451. The next prime is 21700224493. The reversal of 21700224484 is 48442200712.

It can be written as a sum of positive squares in only one way, i.e., 11952611584 + 9747612900 = 109328^2 + 98730^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2712528057 + ... + 2712528064.

Almost surely, 2^21700224484 is an apocalyptic number.

It is an amenable number.

21700224484 is a deficient number, since it is larger than the sum of its proper divisors (16275168370).

21700224484 is a wasteful number, since it uses less digits than its factorization.

21700224484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5425056125 (or 5425056123 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 34.

The spelling of 21700224484 in words is "twenty-one billion, seven hundred million, two hundred twenty-four thousand, four hundred eighty-four".