2219085182161 has 4 divisors (see below), whose sum is σ = 2219473343412. Its totient is φ = 2218697020912.

The previous prime is 2219085182147. The next prime is 2219085182203. The reversal of 2219085182161 is 1612815809122.

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 730272793600 + 1488812388561 = 854560^2 + 1220169^2 .

It is a cyclic number.

It is not a de Polignac number, because 2219085182161 - 2⁵ = 2219085182129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2219085152161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194072050 + ... + 194083483.

It is an arithmetic number, because the mean of its divisors is an integer number (554868335853).

Almost surely, 2^{2219085182161} is an apocalyptic number.

It is an amenable number.

2219085182161 is a deficient number, since it is larger than the sum of its proper divisors (388161251).

2219085182161 is an equidigital number, since it uses as much as digits as its factorization.

2219085182161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388161250.

The product of its (nonzero) digits is 138240, while the sum is 46.

The spelling of 2219085182161 in words is "two trillion, two hundred nineteen billion, eighty-five million, one hundred eighty-two thousand, one hundred sixty-one".