20110011002181 has 32 divisors (see below), whose sum is σ = 30252316108800. Its totient is φ = 13200004833840.

The previous prime is 20110011002149. The next prime is 20110011002183. The reversal of 20110011002181 is 18120011001102.

It is not a de Polignac number, because 20110011002181 - 2⁵ = 20110011002149 is a prime.

It is a super-2 number, since 2×20110011002181² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110011002183) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 873940 + ... + 6401858.

It is an arithmetic number, because the mean of its divisors is an integer number (945384878400).

Almost surely, 2^{20110011002181} is an apocalyptic number.

It is an amenable number.

20110011002181 is a deficient number, since it is larger than the sum of its proper divisors (10142305106619).

20110011002181 is a wasteful number, since it uses less digits than its factorization.

20110011002181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5530006 (or 5530000 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 20110011002181 its reverse (18120011001102), we get a palindrome (38230022003283).

The spelling of 20110011002181 in words is "twenty trillion, one hundred ten billion, eleven million, two thousand, one hundred eighty-one".