1005221252170 has 16 divisors (see below), whose sum is σ = 1810402949448. Its totient is φ = 401865235200.

The previous prime is 1005221252117. The next prime is 1005221252201. The reversal of 1005221252170 is 712521225001.

It can be written as a sum of positive squares in 4 ways, for example, as 565613797329 + 439607454841 = 752073^2 + 663029^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27889299 + ... + 27925318.

Almost surely, 2^{1005221252170} is an apocalyptic number.

1005221252170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1005221252170 is a deficient number, since it is larger than the sum of its proper divisors (805181697278).

1005221252170 is a wasteful number, since it uses less digits than its factorization.

1005221252170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55816425.

The product of its (nonzero) digits is 2800, while the sum is 28.

Adding to 1005221252170 its reverse (712521225001), we get a palindrome (1717742477171).

The spelling of 1005221252170 in words is "one trillion, five billion, two hundred twenty-one million, two hundred fifty-two thousand, one hundred seventy".