10220401021 has 2 divisors, whose sum is σ = 10220401022. Its totient is φ = 10220401020.

The previous prime is 10220401013. The next prime is 10220401031. The reversal of 10220401021 is 12010402201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5813300025 + 4407100996 = 76245^2 + 66386^2 .

It is a cyclic number.

It is not a de Polignac number, because 10220401021 - 2³ = 10220401013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10220400992 and 10220401010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10220401031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110200510 + 5110200511.

It is an arithmetic number, because the mean of its divisors is an integer number (5110200511).

Almost surely, 2^10220401021 is an apocalyptic number.

It is an amenable number.

10220401021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10220401021 is an equidigital number, since it uses as much as digits as its factorization.

10220401021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 10220401021 its reverse (12010402201), we get a palindrome (22230803222).

The spelling of 10220401021 in words is "ten billion, two hundred twenty million, four hundred one thousand, twenty-one".