10220320021 has 2 divisors, whose sum is σ = 10220320022. Its totient is φ = 10220320020.

The previous prime is 10220319961. The next prime is 10220320027. The reversal of 10220320021 is 12002302201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9353017521 + 867302500 = 96711^2 + 29450^2 .

It is a cyclic number.

It is not a de Polignac number, because 10220320021 - 2²³ = 10211931413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10220319983 and 10220320010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10220320027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110160010 + 5110160011.

It is an arithmetic number, because the mean of its divisors is an integer number (5110160011).

Almost surely, 2^10220320021 is an apocalyptic number.

It is an amenable number.

10220320021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10220320021 is an equidigital number, since it uses as much as digits as its factorization.

10220320021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 10220320021 its reverse (12002302201), we get a palindrome (22222622222).

The spelling of 10220320021 in words is "ten billion, two hundred twenty million, three hundred twenty thousand, twenty-one".