172122701271 has 4 divisors (see below), whose sum is σ = 229496935032. Its totient is φ = 114748467512.

The previous prime is 172122701207. The next prime is 172122701273. The reversal of 172122701271 is 172107221271.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 172122701271 - 2⁶ = 172122701207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172122701273) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 28687116876 + ... + 28687116881.

It is an arithmetic number, because the mean of its divisors is an integer number (57374233758).

Almost surely, 2^172122701271 is an apocalyptic number.

172122701271 is a deficient number, since it is larger than the sum of its proper divisors (57374233761).

172122701271 is an equidigital number, since it uses as much as digits as its factorization.

172122701271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57374233760.

The product of its (nonzero) digits is 5488, while the sum is 33.

The spelling of 172122701271 in words is "one hundred seventy-two billion, one hundred twenty-two million, seven hundred one thousand, two hundred seventy-one".