2012189922 has 54 divisors (see below), whose sum is σ = 4445939043. Its totient is φ = 657725184.

The previous prime is 2012189917. The next prime is 2012189929. The reversal of 2012189922 is 2299812102.

It can be written as a sum of positive squares in 5 ways, for example, as 1306171881 + 706018041 = 36141^2 + 26571^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=31719.

It is not an unprimeable number, because it can be changed into a prime (2012189929) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 18460404 + ... + 18460512.

Almost surely, 2^2012189922 is an apocalyptic number.

2012189922 is an abundant number, since it is smaller than the sum of its proper divisors (2433749121).

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

2012189922 is an equidigital number, since it uses as much as digits as its factorization.

2012189922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 2012189922 is about 44857.4399849122. The cubic root of 2012189922 is about 1262.4755901826.

Multiplying 2012189922 by its product of nonzero digits (10368), we get a square (20862385111296 = 4567536²).

The spelling of 2012189922 in words is "two billion, twelve million, one hundred eighty-nine thousand, nine hundred twenty-two".