220100321 has 8 divisors (see below), whose sum is σ = 253851840. Its totient is φ = 186925968.

The previous prime is 220100303. The next prime is 220100323. The reversal of 220100321 is 123001022.

It is a happy number.

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 220100321 - 2²² = 215906017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220100323) 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, 143471 + ... + 144996.

It is an arithmetic number, because the mean of its divisors is an integer number (31731480).

Almost surely, 2^220100321 is an apocalyptic number.

It is an amenable number.

220100321 is a deficient number, since it is larger than the sum of its proper divisors (33751519).

220100321 is a wasteful number, since it uses less digits than its factorization.

220100321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288583.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 220100321 is about 14835.7784089680. The cubic root of 220100321 is about 603.7728201734.

Adding to 220100321 its reverse (123001022), we get a palindrome (343101343).

The spelling of 220100321 in words is "two hundred twenty million, one hundred thousand, three hundred twenty-one".