172211100331 has 8 divisors (see below), whose sum is σ = 179863176240. Its totient is φ = 164716799328.

The previous prime is 172211100317. The next prime is 172211100349. The reversal of 172211100331 is 133001112271.

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

It is a cyclic number.

It is not a de Polignac number, because 172211100331 - 2⁷ = 172211100203 is a prime.

It is a super-2 number, since 2×172211100331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172211100301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39441496 + ... + 39445861.

It is an arithmetic number, because the mean of its divisors is an integer number (22482897030).

Almost surely, 2^172211100331 is an apocalyptic number.

172211100331 is a deficient number, since it is larger than the sum of its proper divisors (7652075909).

172211100331 is an equidigital number, since it uses as much as digits as its factorization.

172211100331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78887453.

The product of its (nonzero) digits is 252, while the sum is 22.

The spelling of 172211100331 in words is "one hundred seventy-two billion, two hundred eleven million, one hundred thousand, three hundred thirty-one".