10101022021 has 2 divisors, whose sum is σ = 10101022022. Its totient is φ = 10101022020.

The previous prime is 10101022007. The next prime is 10101022037. The reversal of 10101022021 is 12022010101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8725428100 + 1375593921 = 93410^2 + 37089^2 .

It is a cyclic number.

It is not a de Polignac number, because 10101022021 - 2¹³ = 10101013829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10101021989 and 10101022007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10101020021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050511010 + 5050511011.

It is an arithmetic number, because the mean of its divisors is an integer number (5050511011).

Almost surely, 2^10101022021 is an apocalyptic number.

It is an amenable number.

10101022021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10101022021 is an equidigital number, since it uses as much as digits as its factorization.

10101022021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 10101022021 its reverse (12022010101), we get a palindrome (22123032122).

The spelling of 10101022021 in words is "ten billion, one hundred one million, twenty-two thousand, twenty-one".