10217722 has 8 divisors (see below), whose sum is σ = 15381972. Its totient is φ = 5090400.

The previous prime is 10217707. The next prime is 10217723. The reversal of 10217722 is 22771201.

It can be written as a sum of positive squares in 2 ways, for example, as 8874441 + 1343281 = 2979^2 + 1159^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 10217693 and 10217702.

It is not an unprimeable number, because it can be changed into a prime (10217723) 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, 8529 + ... + 9652.

Almost surely, 2^10217722 is an apocalyptic number.

10217722 is a deficient number, since it is larger than the sum of its proper divisors (5164250).

10217722 is a wasteful number, since it uses less digits than its factorization.

10217722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18464.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 10217722 is about 3196.5171671680. The cubic root of 10217722 is about 216.9958163521.

Adding to 10217722 its reverse (22771201), we get a palindrome (32988923).

The spelling of 10217722 in words is "ten million, two hundred seventeen thousand, seven hundred twenty-two".