20113112 has 8 divisors (see below), whose sum is σ = 37712100. Its totient is φ = 10056552.

The previous prime is 20113099. The next prime is 20113123. The reversal of 20113112 is 21131102.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 20113093 and 20113102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1257062 + ... + 1257077.

Almost surely, 2^20113112 is an apocalyptic number.

It is an amenable number.

20113112 is a deficient number, since it is larger than the sum of its proper divisors (17598988).

20113112 is a wasteful number, since it uses less digits than its factorization.

20113112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2514145 (or 2514141 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 20113112 is about 4484.7644308258. The cubic root of 20113112 is about 271.9525219899.

Adding to 20113112 its reverse (21131102), we get a palindrome (41244214).

The spelling of 20113112 in words is "twenty million, one hundred thirteen thousand, one hundred twelve".