891101121101198 has 8 divisors (see below), whose sum is σ = 1527601921887792. Its totient is φ = 381900480471936.

The previous prime is 891101121101173. The next prime is 891101121101203.

It is a happy number.

891101121101198 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×891101121101198² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31825040039315 + ... + 31825040039342.

It is an arithmetic number, because the mean of its divisors is an integer number (190950240235974).

Almost surely, 2^{891101121101198} is an apocalyptic number.

891101121101198 is a deficient number, since it is larger than the sum of its proper divisors (636500800786594).

891101121101198 is a wasteful number, since it uses less digits than its factorization.

891101121101198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63650080078666.

The product of its (nonzero) digits is 10368, while the sum is 44.

The spelling of 891101121101198 in words is "eight hundred ninety-one trillion, one hundred one billion, one hundred twenty-one million, one hundred one thousand, one hundred ninety-eight".