16112221161 has 8 divisors (see below), whose sum is σ = 21483577920. Its totient is φ = 10741172592.

The previous prime is 16112221129. The next prime is 16112221183.

16112221161 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 16112221161 - 2⁵ = 16112221129 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16112220161) 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, 109396 + ... + 210218.

It is an arithmetic number, because the mean of its divisors is an integer number (2685447240).

Almost surely, 2^16112221161 is an apocalyptic number.

It is an amenable number.

16112221161 is a deficient number, since it is larger than the sum of its proper divisors (5371356759).

16112221161 is a wasteful number, since it uses less digits than its factorization.

16112221161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154095.

The product of its digits is 288, while the sum is 24.

The spelling of 16112221161 in words is "sixteen billion, one hundred twelve million, two hundred twenty-one thousand, one hundred sixty-one".