101001222110221 has 4 divisors (see below), whose sum is σ = 101006809406172. Its totient is φ = 100995634814272.

The previous prime is 101001222110207. The next prime is 101001222110227. The reversal of 101001222110221 is 122011222100101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56262915741321 + 44738306368900 = 7500861^2 + 6688670^2 .

It is a cyclic number.

It is not a de Polignac number, because 101001222110221 - 2¹⁷ = 101001221979149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101001222110195 and 101001222110204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101001222110227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2793620860 + ... + 2793657013.

It is an arithmetic number, because the mean of its divisors is an integer number (25251702351543).

Almost surely, 2^{101001222110221} is an apocalyptic number.

It is an amenable number.

101001222110221 is a deficient number, since it is larger than the sum of its proper divisors (5587295951).

101001222110221 is an equidigital number, since it uses as much as digits as its factorization.

101001222110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5587295950.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 101001222110221 its reverse (122011222100101), we get a palindrome (223012444210322).

The spelling of 101001222110221 in words is "one hundred one trillion, one billion, two hundred twenty-two million, one hundred ten thousand, two hundred twenty-one".