891220242022198 has 12 divisors (see below), whose sum is σ = 1469408580855180. Its totient is φ = 405100110009980.

The previous prime is 891220242022189. The next prime is 891220242022261.

891220242022198 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1841364136168 + ... + 1841364136651.

It is an arithmetic number, because the mean of its divisors is an integer number (122450715071265).

Almost surely, 2^{891220242022198} is an apocalyptic number.

891220242022198 is a deficient number, since it is larger than the sum of its proper divisors (578188338832982).

891220242022198 is a wasteful number, since it uses less digits than its factorization.

891220242022198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3682728272843 (or 3682728272832 counting only the distinct ones).

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

The spelling of 891220242022198 in words is "eight hundred ninety-one trillion, two hundred twenty billion, two hundred forty-two million, twenty-two thousand, one hundred ninety-eight".