220023020210321 has 4 divisors (see below), whose sum is σ = 225389435337444. Its totient is φ = 214656605083200.

The previous prime is 220023020210317. The next prime is 220023020210339. The reversal of 220023020210321 is 123012020320022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56893288759696 + 163129731450625 = 7542764^2 + 12772225^2 .

It is a cyclic number.

It is not a de Polignac number, because 220023020210321 - 2² = 220023020210317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 220023020210293 and 220023020210302.

It is not an unprimeable number, because it can be changed into a prime (220023020240321) 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, 2683207563500 + ... + 2683207563581.

It is an arithmetic number, because the mean of its divisors is an integer number (56347358834361).

Almost surely, 2^{220023020210321} is an apocalyptic number.

It is an amenable number.

220023020210321 is a deficient number, since it is larger than the sum of its proper divisors (5366415127123).

220023020210321 is an equidigital number, since it uses as much as digits as its factorization.

220023020210321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5366415127122.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 220023020210321 its reverse (123012020320022), we get a palindrome (343035040530343).

The spelling of 220023020210321 in words is "two hundred twenty trillion, twenty-three billion, twenty million, two hundred ten thousand, three hundred twenty-one".