101002020221021 has 2 divisors, whose sum is σ = 101002020221022. Its totient is φ = 101002020221020.

The previous prime is 101002020220999. The next prime is 101002020221027. The reversal of 101002020221021 is 120122020200101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95799834732121 + 5202185488900 = 9787739^2 + 2280830^2 .

It is a cyclic number.

It is not a de Polignac number, because 101002020221021 - 2¹⁴ = 101002020204637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101002020220987 and 101002020221005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101002020221027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50501010110510 + 50501010110511.

It is an arithmetic number, because the mean of its divisors is an integer number (50501010110511).

Almost surely, 2^{101002020221021} is an apocalyptic number.

It is an amenable number.

101002020221021 is a deficient number, since it is larger than the sum of its proper divisors (1).

101002020221021 is an equidigital number, since it uses as much as digits as its factorization.

101002020221021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 101002020221021 its reverse (120122020200101), we get a palindrome (221124040421122).

The spelling of 101002020221021 in words is "one hundred one trillion, two billion, twenty million, two hundred twenty-one thousand, twenty-one".