17070400221 has 16 divisors (see below), whose sum is σ = 26015236224. Its totient is φ = 9753315264.

The previous prime is 17070400189. The next prime is 17070400241. The reversal of 17070400221 is 12200407071.

It is not a de Polignac number, because 17070400221 - 2⁵ = 17070400189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 17070400191 and 17070400200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17070400241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142095 + ... + 233091.

It is an arithmetic number, because the mean of its divisors is an integer number (1625952264).

Almost surely, 2^17070400221 is an apocalyptic number.

It is an amenable number.

17070400221 is a deficient number, since it is larger than the sum of its proper divisors (8944836003).

17070400221 is an equidigital number, since it uses as much as digits as its factorization.

17070400221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99940.

The product of its (nonzero) digits is 784, while the sum is 24.

Adding to 17070400221 its reverse (12200407071), we get a palindrome (29270807292).

The spelling of 17070400221 in words is "seventeen billion, seventy million, four hundred thousand, two hundred twenty-one".