981222202222189 has 4 divisors (see below), whose sum is σ = 1002099270354624. Its totient is φ = 960345134089756.

The previous prime is 981222202222183. The next prime is 981222202222201.

981222202222189 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 981222202222189 - 2²⁵ = 981222168667757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981222202222183) 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, 10438534066147 + ... + 10438534066240.

It is an arithmetic number, because the mean of its divisors is an integer number (250524817588656).

Almost surely, 2^{981222202222189} is an apocalyptic number.

It is an amenable number.

981222202222189 is a deficient number, since it is larger than the sum of its proper divisors (20877068132435).

981222202222189 is a wasteful number, since it uses less digits than its factorization.

981222202222189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20877068132434.

The product of its (nonzero) digits is 1327104, while the sum is 52.

The spelling of 981222202222189 in words is "nine hundred eighty-one trillion, two hundred twenty-two billion, two hundred two million, two hundred twenty-two thousand, one hundred eighty-nine".