220321004 has 24 divisors (see below), whose sum is σ = 399440160. Its totient is φ = 106206464.

The previous prime is 220320943. The next prime is 220321009. The reversal of 220321004 is 400123022.

220321004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 220321004.

It is not an unprimeable number, because it can be changed into a prime (220321009) 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, 141092 + ... + 142644.

It is an arithmetic number, because the mean of its divisors is an integer number (16643340).

Almost surely, 2^220321004 is an apocalyptic number.

It is an amenable number.

220321004 is a deficient number, since it is larger than the sum of its proper divisors (179119156).

220321004 is a wasteful number, since it uses less digits than its factorization.

220321004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2809 (or 2807 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 220321004 is about 14843.2140724305. The cubic root of 220321004 is about 603.9745431722.

Adding to 220321004 its reverse (400123022), we get a palindrome (620444026).

The spelling of 220321004 in words is "two hundred twenty million, three hundred twenty-one thousand, four".