2012201423 has 4 divisors (see below), whose sum is σ = 2013190320. Its totient is φ = 2011212528.

The previous prime is 2012201417. The next prime is 2012201473. The reversal of 2012201423 is 3241022102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2012201423 - 2⁴ = 2012201407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012201473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 491390 + ... + 495467.

It is an arithmetic number, because the mean of its divisors is an integer number (503297580).

Almost surely, 2^2012201423 is an apocalyptic number.

2012201423 is a deficient number, since it is larger than the sum of its proper divisors (988897).

2012201423 is an equidigital number, since it uses as much as digits as its factorization.

2012201423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988896.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2012201423 is about 44857.5681797397. The cubic root of 2012201423 is about 1262.4779954731.

Adding to 2012201423 its reverse (3241022102), we get a palindrome (5253223525).

The spelling of 2012201423 in words is "two billion, twelve million, two hundred one thousand, four hundred twenty-three".