20010111011112 has 16 divisors (see below), whose sum is σ = 50025277527840. Its totient is φ = 6670037003696.

The previous prime is 20010111011057. The next prime is 20010111011119. The reversal of 20010111011112 is 21111011101002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (20010111011119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416877312708 + ... + 416877312755.

It is an arithmetic number, because the mean of its divisors is an integer number (3126579845490).

Almost surely, 2^{20010111011112} is an apocalyptic number.

It is an amenable number.

20010111011112 is an abundant number, since it is smaller than the sum of its proper divisors (30015166516728).

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

20010111011112 is a wasteful number, since it uses less digits than its factorization.

20010111011112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833754625472 (or 833754625468 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 20010111011112 its reverse (21111011101002), we get a palindrome (41121122112114).

The spelling of 20010111011112 in words is "twenty trillion, ten billion, one hundred eleven million, eleven thousand, one hundred twelve".