220123204001 has 4 divisors (see below), whose sum is σ = 229693778112. Its totient is φ = 210552629892.

The previous prime is 220123203983. The next prime is 220123204043. The reversal of 220123204001 is 100402321022.

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 220123204001 - 2¹⁰ = 220123202977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220123204051) 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, 4785287021 + ... + 4785287066.

It is an arithmetic number, because the mean of its divisors is an integer number (57423444528).

Almost surely, 2^220123204001 is an apocalyptic number.

It is an amenable number.

220123204001 is a deficient number, since it is larger than the sum of its proper divisors (9570574111).

220123204001 is an equidigital number, since it uses as much as digits as its factorization.

220123204001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9570574110.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 220123204001 its reverse (100402321022), we get a palindrome (320525525023).

The spelling of 220123204001 in words is "two hundred twenty billion, one hundred twenty-three million, two hundred four thousand, one".