2001224455 has 8 divisors (see below), whose sum is σ = 2401768800. Its totient is φ = 1600779936.

The previous prime is 2001224453. The next prime is 2001224483. The reversal of 2001224455 is 5544221002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2001224455 - 2¹ = 2001224453 is a prime.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30261 + ... + 70129.

It is an arithmetic number, because the mean of its divisors is an integer number (300221100).

Almost surely, 2^2001224455 is an apocalyptic number.

2001224455 is a deficient number, since it is larger than the sum of its proper divisors (400544345).

2001224455 is a wasteful number, since it uses less digits than its factorization.

2001224455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49913.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 2001224455 is about 44735.0472783924. The cubic root of 2001224455 is about 1260.1781168790.

Adding to 2001224455 its reverse (5544221002), we get a palindrome (7545445457).

The spelling of 2001224455 in words is "two billion, one million, two hundred twenty-four thousand, four hundred fifty-five".