2170872181101 has 8 divisors (see below), whose sum is σ = 3117149798560. Its totient is φ = 1335921342192.

The previous prime is 2170872181087. The next prime is 2170872181169. The reversal of 2170872181101 is 1011812780712.

It is a happy number.

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

It is not a de Polignac number, because 2170872181101 - 2⁷ = 2170872180973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 55663389259 = 2170872181101 / (2 + 1 + 7 + 0 + 8 + 7 + 2 + 1 + 8 + 1 + 1 + 0 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2170872181101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2170872181901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27831694591 + ... + 27831694668.

It is an arithmetic number, because the mean of its divisors is an integer number (389643724820).

Almost surely, 2^{2170872181101} is an apocalyptic number.

It is an amenable number.

2170872181101 is a deficient number, since it is larger than the sum of its proper divisors (946277617459).

2170872181101 is a wasteful number, since it uses less digits than its factorization.

2170872181101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55663389275.

The product of its (nonzero) digits is 12544, while the sum is 39.

The spelling of 2170872181101 in words is "two trillion, one hundred seventy billion, eight hundred seventy-two million, one hundred eighty-one thousand, one hundred one".