172220513311 has 8 divisors (see below), whose sum is σ = 214716484224. Its totient is φ = 134197802520.

The previous prime is 172220513303. The next prime is 172220513321. The reversal of 172220513311 is 113315022271.

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 172220513311 - 2³ = 172220513303 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172220513311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172220513321) 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, 1118314945 + ... + 1118315098.

It is an arithmetic number, because the mean of its divisors is an integer number (26839560528).

Almost surely, 2^172220513311 is an apocalyptic number.

172220513311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

172220513311 is a deficient number, since it is larger than the sum of its proper divisors (42495970913).

172220513311 is a wasteful number, since it uses less digits than its factorization.

172220513311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236630061.

The product of its (nonzero) digits is 2520, while the sum is 28.

Adding to 172220513311 its reverse (113315022271), we get a palindrome (285535535582).

The spelling of 172220513311 in words is "one hundred seventy-two billion, two hundred twenty million, five hundred thirteen thousand, three hundred eleven".