10221747066 has 12 divisors (see below), whose sum is σ = 22147118682. Its totient is φ = 3407249016.

The previous prime is 10221747059. The next prime is 10221747071. The reversal of 10221747066 is 66074712201.

10221747066 is a `hidden beast` number, since 102 + 21 + 7 + 470 + 66 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7313841441 + 2907905625 = 85521^2 + 53925^2 .

It is a super-2 number, since 2×10221747066² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10221747066.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 283937401 + ... + 283937436.

Almost surely, 2^10221747066 is an apocalyptic number.

10221747066 is an abundant number, since it is smaller than the sum of its proper divisors (11925371616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10221747066 is a wasteful number, since it uses less digits than its factorization.

10221747066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567874845 (or 567874842 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The spelling of 10221747066 in words is "ten billion, two hundred twenty-one million, seven hundred forty-seven thousand, sixty-six".