201072222170 has 32 divisors (see below), whose sum is σ = 370545563520. Its totient is φ = 78516325440.

The previous prime is 201072222163. The next prime is 201072222193. The reversal of 201072222170 is 71222270102.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 683540 + ... + 932400.

It is an arithmetic number, because the mean of its divisors is an integer number (11579548860).

Almost surely, 2^201072222170 is an apocalyptic number.

201072222170 is a deficient number, since it is larger than the sum of its proper divisors (169473341350).

201072222170 is a wasteful number, since it uses less digits than its factorization.

201072222170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250790.

The product of its (nonzero) digits is 1568, while the sum is 26.

Adding to 201072222170 its reverse (71222270102), we get a palindrome (272294492272).

The spelling of 201072222170 in words is "two hundred one billion, seventy-two million, two hundred twenty-two thousand, one hundred seventy".