221424002 has 8 divisors (see below), whose sum is σ = 332394816. Its totient is φ = 110625732.

The previous prime is 221424001. The next prime is 221424029. The reversal of 221424002 is 200424122.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (221424001) 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, 39878 + ... + 45089.

It is an arithmetic number, because the mean of its divisors is an integer number (41549352).

Almost surely, 2^221424002 is an apocalyptic number.

221424002 is a deficient number, since it is larger than the sum of its proper divisors (110970814).

221424002 is a wasteful number, since it uses less digits than its factorization.

221424002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86272.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 221424002 is about 14880.3226443515. The cubic root of 221424002 is about 604.9807629974.

Adding to 221424002 its reverse (200424122), we get a palindrome (421848124).

The spelling of 221424002 in words is "two hundred twenty-one million, four hundred twenty-four thousand, two".