220323100022021 has 6 divisors (see below), whose sum is σ = 224558574357810. Its totient is φ = 216166060396208.

The previous prime is 220323100022017. The next prime is 220323100022033. The reversal of 220323100022021 is 120220001323022.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 138319027549921 + 82004072472100 = 11760911^2 + 9055610^2 .

It is not a de Polignac number, because 220323100022021 - 2² = 220323100022017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220323100021984 and 220323100022002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220323100012021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39217352126 + ... + 39217357743.

It is an arithmetic number, because the mean of its divisors is an integer number (37426429059635).

Almost surely, 2^{220323100022021} is an apocalyptic number.

It is an amenable number.

220323100022021 is a deficient number, since it is larger than the sum of its proper divisors (4235474335789).

220323100022021 is an frugal number, since it uses more digits than its factorization.

220323100022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78434709975 (or 78434709922 counting only the distinct ones).

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

Adding to 220323100022021 its reverse (120220001323022), we get a palindrome (340543101345043).

The spelling of 220323100022021 in words is "two hundred twenty trillion, three hundred twenty-three billion, one hundred million, twenty-two thousand, twenty-one".