220123321001 has 4 divisors (see below), whose sum is σ = 220172891604. Its totient is φ = 220073750400.

The previous prime is 220123320973. The next prime is 220123321057. The reversal of 220123321001 is 100123321022.

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 38392483600 + 181730837401 = 195940^2 + 426299^2 .

It is a cyclic number.

It is not a de Polignac number, because 220123321001 - 2²² = 220119126697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220123381001) 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, 24778640 + ... + 24787521.

It is an arithmetic number, because the mean of its divisors is an integer number (55043222901).

Almost surely, 2^220123321001 is an apocalyptic number.

It is an amenable number.

220123321001 is a deficient number, since it is larger than the sum of its proper divisors (49570603).

220123321001 is an equidigital number, since it uses as much as digits as its factorization.

220123321001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49570602.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 220123321001 its reverse (100123321022), we get a palindrome (320246642023).

The spelling of 220123321001 in words is "two hundred twenty billion, one hundred twenty-three million, three hundred twenty-one thousand, one".