181222100002022 has 4 divisors (see below), whose sum is σ = 271833150003036. Its totient is φ = 90611050001010.

The previous prime is 181222100001967. The next prime is 181222100002033. The reversal of 181222100002022 is 220200001222181.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 45305525000504 + ... + 45305525000507.

It is an arithmetic number, because the mean of its divisors is an integer number (67958287500759).

Almost surely, 2^{181222100002022} is an apocalyptic number.

181222100002022 is a deficient number, since it is larger than the sum of its proper divisors (90611050001014).

181222100002022 is an equidigital number, since it uses as much as digits as its factorization.

181222100002022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90611050001013.

The product of its (nonzero) digits is 512, while the sum is 23.

The spelling of 181222100002022 in words is "one hundred eighty-one trillion, two hundred twenty-two billion, one hundred million, two thousand, twenty-two".