220310320123021 has 8 divisors (see below), whose sum is σ = 228718285471800. Its totient is φ = 211956425291520.

The previous prime is 220310320122967. The next prime is 220310320123037. The reversal of 220310320123021 is 120321023013022.

It can be written as a sum of positive squares in 4 ways, for example, as 5068851490921 + 215241468632100 = 2251411^2 + 14671110^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220310320123021 - 2¹⁵ = 220310320090253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220310320122983 and 220310320123001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220310320123921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13517621016 + ... + 13517637313.

It is an arithmetic number, because the mean of its divisors is an integer number (28589785683975).

Almost surely, 2^{220310320123021} is an apocalyptic number.

It is an amenable number.

220310320123021 is a deficient number, since it is larger than the sum of its proper divisors (8407965348779).

220310320123021 is a wasteful number, since it uses less digits than its factorization.

220310320123021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27035258639.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 220310320123021 its reverse (120321023013022), we get a palindrome (340631343136043).

The spelling of 220310320123021 in words is "two hundred twenty trillion, three hundred ten billion, three hundred twenty million, one hundred twenty-three thousand, twenty-one".