11880211821173 has 4 divisors (see below), whose sum is σ = 11883363910860. Its totient is φ = 11877059731488.

The previous prime is 11880211821169. The next prime is 11880211821199. The reversal of 11880211821173 is 37112811208811.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11103243615409 + 776968205764 = 3332153^2 + 881458^2 .

It is a cyclic number.

It is not a de Polignac number, because 11880211821173 - 2² = 11880211821169 is a prime.

It is a super-2 number, since 2×11880211821173² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11880211821103) 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, 1576039190 + ... + 1576046727.

It is an arithmetic number, because the mean of its divisors is an integer number (2970840977715).

Almost surely, 2^{11880211821173} is an apocalyptic number.

It is an amenable number.

11880211821173 is a deficient number, since it is larger than the sum of its proper divisors (3152089687).

11880211821173 is an equidigital number, since it uses as much as digits as its factorization.

11880211821173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3152089686.

The product of its (nonzero) digits is 43008, while the sum is 44.

The spelling of 11880211821173 in words is "eleven trillion, eight hundred eighty billion, two hundred eleven million, eight hundred twenty-one thousand, one hundred seventy-three".