2001224454 has 16 divisors (see below), whose sum is σ = 4050672192. Its totient is φ = 659037608.

The previous prime is 2001224453. The next prime is 2001224483. The reversal of 2001224454 is 4544221002.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001224453) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2008764 + ... + 2009759.

It is an arithmetic number, because the mean of its divisors is an integer number (253167012).

Almost surely, 2^2001224454 is an apocalyptic number.

2001224454 is an abundant number, since it is smaller than the sum of its proper divisors (2049447738).

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

2001224454 is a wasteful number, since it uses less digits than its factorization.

2001224454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4018611.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 2001224454 is about 44735.0472672154. The cubic root of 2001224454 is about 1260.1781166691.

Adding to 2001224454 its reverse (4544221002), we get a palindrome (6545445456).

The spelling of 2001224454 in words is "two billion, one million, two hundred twenty-four thousand, four hundred fifty-four".