20111013112 has 16 divisors (see below), whose sum is σ = 38510451360. Its totient is φ = 9841559424.

The previous prime is 20111013101. The next prime is 20111013127. The reversal of 20111013112 is 21131011102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20111013092 and 20111013101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26742993 + ... + 26743744.

It is an arithmetic number, because the mean of its divisors is an integer number (2406903210).

Almost surely, 2^20111013112 is an apocalyptic number.

It is an amenable number.

20111013112 is a deficient number, since it is larger than the sum of its proper divisors (18399438248).

20111013112 is a wasteful number, since it uses less digits than its factorization.

20111013112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53486790 (or 53486786 counting only the distinct ones).

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

Adding to 20111013112 its reverse (21131011102), we get a palindrome (41242024214).

The spelling of 20111013112 in words is "twenty billion, one hundred eleven million, thirteen thousand, one hundred twelve".