101210221202221 has 2 divisors, whose sum is σ = 101210221202222. Its totient is φ = 101210221202220.

The previous prime is 101210221202183. The next prime is 101210221202243. The reversal of 101210221202221 is 122202122012101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64438974157321 + 36771247044900 = 8027389^2 + 6063930^2 .

It is a cyclic number.

It is not a de Polignac number, because 101210221202221 - 2¹³ = 101210221194029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101210221232221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50605110601110 + 50605110601111.

It is an arithmetic number, because the mean of its divisors is an integer number (50605110601111).

Almost surely, 2^{101210221202221} is an apocalyptic number.

It is an amenable number.

101210221202221 is a deficient number, since it is larger than the sum of its proper divisors (1).

101210221202221 is an equidigital number, since it uses as much as digits as its factorization.

101210221202221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 101210221202221 its reverse (122202122012101), we get a palindrome (223412343214322).

The spelling of 101210221202221 in words is "one hundred one trillion, two hundred ten billion, two hundred twenty-one million, two hundred two thousand, two hundred twenty-one".