17221200472 has 16 divisors (see below), whose sum is σ = 36902572560. Its totient is φ = 7380514464.

The previous prime is 17221200467. The next prime is 17221200473. The reversal of 17221200472 is 27400212271.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 17221200472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17221200473) 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, 153760663 + ... + 153760774.

It is an arithmetic number, because the mean of its divisors is an integer number (2306410785).

Almost surely, 2^17221200472 is an apocalyptic number.

It is an amenable number.

17221200472 is an abundant number, since it is smaller than the sum of its proper divisors (19681372088).

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

17221200472 is a wasteful number, since it uses less digits than its factorization.

17221200472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307521450 (or 307521446 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The spelling of 17221200472 in words is "seventeen billion, two hundred twenty-one million, two hundred thousand, four hundred seventy-two".