220283021 has 8 divisors (see below), whose sum is σ = 252192960. Its totient is φ = 188483328.

The previous prime is 220283003. The next prime is 220283027. The reversal of 220283021 is 120382022.

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 220283021 - 2¹⁸ = 220020877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220282984 and 220283002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220283027) 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, 23231 + ... + 31308.

It is an arithmetic number, because the mean of its divisors is an integer number (31524120).

Almost surely, 2^220283021 is an apocalyptic number.

It is an amenable number.

220283021 is a deficient number, since it is larger than the sum of its proper divisors (31909939).

220283021 is an equidigital number, since it uses as much as digits as its factorization.

220283021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55123.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 220283021 is about 14841.9345437177. The cubic root of 220283021 is about 603.9398330854.

Subtracting from 220283021 its reverse (120382022), we obtain a palindrome (99900999).

The spelling of 220283021 in words is "two hundred twenty million, two hundred eighty-three thousand, twenty-one".