20111310112 has 24 divisors (see below), whose sum is σ = 39721473792. Its totient is φ = 10023316800.

The previous prime is 20111310073. The next prime is 20111310113. The reversal of 20111310112 is 21101311102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20111310092 and 20111310101.

It is not an unprimeable number, because it can be changed into a prime (20111310113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1000464 + ... + 1020367.

It is an arithmetic number, because the mean of its divisors is an integer number (1655061408).

Almost surely, 2^20111310112 is an apocalyptic number.

It is an amenable number.

20111310112 is a deficient number, since it is larger than the sum of its proper divisors (19610163680).

20111310112 is a wasteful number, since it uses less digits than its factorization.

20111310112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021152 (or 2021144 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 20111310112 its reverse (21101311102), we get a palindrome (41212621214).

The spelling of 20111310112 in words is "twenty billion, one hundred eleven million, three hundred ten thousand, one hundred twelve".