20151112 has 16 divisors (see below), whose sum is σ = 37833840. Its totient is φ = 10062096.

The previous prime is 20151097. The next prime is 20151127. The reversal of 20151112 is 21115102.

It is an interprime number because it is at equal distance from previous prime (20151097) and next prime (20151127).

It is a junction number, because it is equal to n+sod(n) for n = 20151092 and 20151101.

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 in 3 ways as a sum of consecutive naturals, for example, 7863 + ... + 10105.

It is an arithmetic number, because the mean of its divisors is an integer number (2364615).

Almost surely, 2^20151112 is an apocalyptic number.

It is an amenable number.

20151112 is a deficient number, since it is larger than the sum of its proper divisors (17682728).

20151112 is a wasteful number, since it uses less digits than its factorization.

20151112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3372 (or 3368 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 20151112 is about 4488.9989975495. The cubic root of 20151112 is about 272.1236822174.

Adding to 20151112 its reverse (21115102), we get a palindrome (41266214).

The spelling of 20151112 in words is "twenty million, one hundred fifty-one thousand, one hundred twelve".