224021001 has 16 divisors (see below), whose sum is σ = 315011840. Its totient is φ = 141218640.

The previous prime is 224020997. The next prime is 224021009. The reversal of 224021001 is 100120422.

It is not a de Polignac number, because 224021001 - 2² = 224020997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (224021009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29106 + ... + 35988.

It is an arithmetic number, because the mean of its divisors is an integer number (19688240).

Almost surely, 2^224021001 is an apocalyptic number.

It is an amenable number.

224021001 is a deficient number, since it is larger than the sum of its proper divisors (90990839).

224021001 is a wasteful number, since it uses less digits than its factorization.

224021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7476.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 224021001 is about 14967.3311248198. The cubic root of 224021001 is about 607.3367733668.

Adding to 224021001 its reverse (100120422), we get a palindrome (324141423).

The spelling of 224021001 in words is "two hundred twenty-four million, twenty-one thousand, one".