10891289121 has 8 divisors (see below), whose sum is σ = 14522719584. Its totient is φ = 7260359040.

The previous prime is 10891289081. The next prime is 10891289161. The reversal of 10891289121 is 12198219801.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10891289081) and next prime (10891289161).

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

It is not a de Polignac number, because 10891289121 - 2¹⁵ = 10891256353 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10891289161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70960 + ... + 163761.

It is an arithmetic number, because the mean of its divisors is an integer number (1815339948).

Almost surely, 2^10891289121 is an apocalyptic number.

It is an amenable number.

10891289121 is a deficient number, since it is larger than the sum of its proper divisors (3631430463).

10891289121 is a wasteful number, since it uses less digits than its factorization.

10891289121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250191.

The product of its (nonzero) digits is 20736, while the sum is 42.

The spelling of 10891289121 in words is "ten billion, eight hundred ninety-one million, two hundred eighty-nine thousand, one hundred twenty-one".