20202112 has 48 divisors (see below), whose sum is σ = 46831770. Its totient is φ = 8655360.

The previous prime is 20202107. The next prime is 20202113. The reversal of 20202112 is 21120202.

It can be written as a sum of positive squares in only one way, i.e., 14930496 + 5271616 = 3864^2 + 2296^2 .

It is not an unprimeable number, because it can be changed into a prime (20202113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4662 + ... + 7882.

Almost surely, 2^20202112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20202112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23415885).

20202112 is an abundant number, since it is smaller than the sum of its proper divisors (26629658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20202112 is an equidigital number, since it uses as much as digits as its factorization.

20202112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3249 (or 3230 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 20202112 is about 4494.6759616239. The cubic root of 20202112 is about 272.3530594039.

Adding to 20202112 its reverse (21120202), we get a palindrome (41322314).

The spelling of 20202112 in words is "twenty million, two hundred two thousand, one hundred twelve".