101010201200021 has 2 divisors, whose sum is σ = 101010201200022. Its totient is φ = 101010201200020.

The previous prime is 101010201199967. The next prime is 101010201200089. The reversal of 101010201200021 is 120002102010101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70499768059396 + 30510433140625 = 8396414^2 + 5523625^2 .

It is a cyclic number.

It is not a de Polignac number, because 101010201200021 - 2⁴⁶ = 30641457022357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101010201199975 and 101010201200011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101010203200021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50505100600010 + 50505100600011.

It is an arithmetic number, because the mean of its divisors is an integer number (50505100600011).

Almost surely, 2^{101010201200021} is an apocalyptic number.

It is an amenable number.

101010201200021 is a deficient number, since it is larger than the sum of its proper divisors (1).

101010201200021 is an equidigital number, since it uses as much as digits as its factorization.

101010201200021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 101010201200021 its reverse (120002102010101), we get a palindrome (221012303210122).

The spelling of 101010201200021 in words is "one hundred one trillion, ten billion, two hundred one million, two hundred thousand, twenty-one".