222030021 has 8 divisors (see below), whose sum is σ = 302338944. Its totient is φ = 144870560.

The previous prime is 222030019. The next prime is 222030037. The reversal of 222030021 is 120030222.

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 222030021 - 2¹ = 222030019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222029979 and 222030006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222030001) 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, 787200 + ... + 787481.

It is an arithmetic number, because the mean of its divisors is an integer number (37792368).

Almost surely, 2^222030021 is an apocalyptic number.

It is an amenable number.

222030021 is a deficient number, since it is larger than the sum of its proper divisors (80308923).

222030021 is a wasteful number, since it uses less digits than its factorization.

222030021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574731.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 222030021 is about 14900.6718304914. The cubic root of 222030021 is about 605.5321875086.

Adding to 222030021 its reverse (120030222), we get a palindrome (342060243).

The spelling of 222030021 in words is "two hundred twenty-two million, thirty thousand, twenty-one".