220534321 has 4 divisors (see below), whose sum is σ = 252039232. Its totient is φ = 189029412.

The previous prime is 220534313. The next prime is 220534339. The reversal of 220534321 is 123435022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220534321 - 2³ = 220534313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220534292 and 220534301.

It is not an unprimeable number, because it can be changed into a prime (220535321) 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, 15752445 + ... + 15752458.

It is an arithmetic number, because the mean of its divisors is an integer number (63009808).

Almost surely, 2^220534321 is an apocalyptic number.

It is an amenable number.

220534321 is a deficient number, since it is larger than the sum of its proper divisors (31504911).

220534321 is an equidigital number, since it uses as much as digits as its factorization.

220534321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31504910.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 220534321 is about 14850.3980081343. The cubic root of 220534321 is about 604.1694050281.

Adding to 220534321 its reverse (123435022), we get a palindrome (343969343).

The spelling of 220534321 in words is "two hundred twenty million, five hundred thirty-four thousand, three hundred twenty-one".