101021210120221 has 2 divisors, whose sum is σ = 101021210120222. Its totient is φ = 101021210120220.

The previous prime is 101021210120213. The next prime is 101021210120407. The reversal of 101021210120221 is 122021012120101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95265193431321 + 5756016688900 = 9760389^2 + 2399170^2 .

It is a cyclic number.

It is not a de Polignac number, because 101021210120221 - 2³ = 101021210120213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101021210120195 and 101021210120204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101021220120221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50510605060110 + 50510605060111.

It is an arithmetic number, because the mean of its divisors is an integer number (50510605060111).

Almost surely, 2^{101021210120221} is an apocalyptic number.

It is an amenable number.

101021210120221 is a deficient number, since it is larger than the sum of its proper divisors (1).

101021210120221 is an equidigital number, since it uses as much as digits as its factorization.

101021210120221 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 16.

Adding to 101021210120221 its reverse (122021012120101), we get a palindrome (223042222240322).

The spelling of 101021210120221 in words is "one hundred one trillion, twenty-one billion, two hundred ten million, one hundred twenty thousand, two hundred twenty-one".