181001001010112 has 56 divisors (see below), whose sum is σ = 362782568210400. Its totient is φ = 89591479577600.

The previous prime is 181001001010079. The next prime is 181001001010223. The reversal of 181001001010112 is 211010100100181.

It is a super-2 number, since 2×181001001010112² (a number of 29 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 7 ways as a sum of consecutive naturals, for example, 42687389 + ... + 46735587.

Almost surely, 2^{181001001010112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 181001001010112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181391284105200).

181001001010112 is an abundant number, since it is smaller than the sum of its proper divisors (181781567200288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

181001001010112 is a wasteful number, since it uses less digits than its factorization.

181001001010112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4055229 (or 4055219 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 181001001010112 its reverse (211010100100181), we get a palindrome (392011101110293).

The spelling of 181001001010112 in words is "one hundred eighty-one trillion, one billion, one million, ten thousand, one hundred twelve".