221024422 has 8 divisors (see below), whose sum is σ = 331991136. Its totient is φ = 110360712.

The previous prime is 221024413. The next prime is 221024431. The reversal of 221024422 is 224420122.

It is an interprime number because it is at equal distance from previous prime (221024413) and next prime (221024431).

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

It is a self number, because there is not a number n which added to its sum of digits gives 221024422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73918 + ... + 76849.

It is an arithmetic number, because the mean of its divisors is an integer number (41498892).

Almost surely, 2^221024422 is an apocalyptic number.

221024422 is a deficient number, since it is larger than the sum of its proper divisors (110966714).

221024422 is a wasteful number, since it uses less digits than its factorization.

221024422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151502.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 221024422 is about 14866.8901253759. The cubic root of 221024422 is about 604.6166293744.

Adding to 221024422 its reverse (224420122), we get a palindrome (445444544).

The spelling of 221024422 in words is "two hundred twenty-one million, twenty-four thousand, four hundred twenty-two".