20010111112 has 16 divisors (see below), whose sum is σ = 37890434700. Its totient is φ = 9905995200.

The previous prime is 20010111091. The next prime is 20010111139. The reversal of 20010111112 is 21111101002.

It can be written as a sum of positive squares in 2 ways, for example, as 19865774916 + 144336196 = 140946^2 + 12014^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12381687 + ... + 12383302.

Almost surely, 2^20010111112 is an apocalyptic number.

It is an amenable number.

20010111112 is a deficient number, since it is larger than the sum of its proper divisors (17880323588).

20010111112 is a wasteful number, since it uses less digits than its factorization.

20010111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24765096 (or 24765092 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20010111112 its reverse (21111101002), we get a palindrome (41121212114).

The spelling of 20010111112 in words is "twenty billion, ten million, one hundred eleven thousand, one hundred twelve".