224010021 has 8 divisors (see below), whose sum is σ = 301637664. Its totient is φ = 147861200.

The previous prime is 224010013. The next prime is 224010023. The reversal of 224010021 is 120010422.

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 224010021 - 2³ = 224010013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 224009979 and 224010006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224010023) 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, 369351 + ... + 369956.

It is an arithmetic number, because the mean of its divisors is an integer number (37704708).

Almost surely, 2^224010021 is an apocalyptic number.

It is an amenable number.

224010021 is a deficient number, since it is larger than the sum of its proper divisors (77627643).

224010021 is a wasteful number, since it uses less digits than its factorization.

224010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739411.

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

The square root of 224010021 is about 14966.9643214648. The cubic root of 224010021 is about 607.3268506859.

Adding to 224010021 its reverse (120010422), we get a palindrome (344020443).

The spelling of 224010021 in words is "two hundred twenty-four million, ten thousand, twenty-one".