220223122001 has 4 divisors (see below), whose sum is σ = 220224084132. Its totient is φ = 220222159872.

The previous prime is 220223121997. The next prime is 220223122079. The reversal of 220223122001 is 100221322022.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 178882473025 + 41340648976 = 422945^2 + 203324^2 .

It is a cyclic number.

It is not a de Polignac number, because 220223122001 - 2² = 220223121997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220223122201) 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, 81785 + ... + 668681.

It is an arithmetic number, because the mean of its divisors is an integer number (55056021033).

Almost surely, 2^220223122001 is an apocalyptic number.

It is an amenable number.

220223122001 is a deficient number, since it is larger than the sum of its proper divisors (962131).

220223122001 is an equidigital number, since it uses as much as digits as its factorization.

220223122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962130.

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

Adding to 220223122001 its reverse (100221322022), we get a palindrome (320444444023).

The spelling of 220223122001 in words is "two hundred twenty billion, two hundred twenty-three million, one hundred twenty-two thousand, one".