220230021 has 8 divisors (see below), whose sum is σ = 320334624. Its totient is φ = 133472720.

The previous prime is 220230011. The next prime is 220230029. The reversal of 220230021 is 120032022.

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 220230021 - 2²¹ = 218132869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220229979 and 220230006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220230029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3336786 + ... + 3336851.

It is an arithmetic number, because the mean of its divisors is an integer number (40041828).

Almost surely, 2^220230021 is an apocalyptic number.

It is an amenable number.

220230021 is a deficient number, since it is larger than the sum of its proper divisors (100104603).

220230021 is a wasteful number, since it uses less digits than its factorization.

220230021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6673651.

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

The square root of 220230021 is about 14840.1489547780. The cubic root of 220230021 is about 603.8913933124.

Adding to 220230021 its reverse (120032022), we get a palindrome (340262043).

It can be divided in two parts, 2202 and 30021, that added together give a palindrome (32223).

The spelling of 220230021 in words is "two hundred twenty million, two hundred thirty thousand, twenty-one".