101001312102221 has 4 divisors (see below), whose sum is σ = 101003479512444. Its totient is φ = 100999144692000.

The previous prime is 101001312102107. The next prime is 101001312102263. The reversal of 101001312102221 is 122201213100101.

It is a happy number.

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 21602323708900 + 79398988393321 = 4647830^2 + 8910611^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101001312102221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101001312102221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101001312102421) 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, 1083635210 + ... + 1083728411.

It is an arithmetic number, because the mean of its divisors is an integer number (25250869878111).

Almost surely, 2^{101001312102221} is an apocalyptic number.

It is an amenable number.

101001312102221 is a deficient number, since it is larger than the sum of its proper divisors (2167410223).

101001312102221 is an equidigital number, since it uses as much as digits as its factorization.

101001312102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2167410222.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 101001312102221 its reverse (122201213100101), we get a palindrome (223202525202322).

The spelling of 101001312102221 in words is "one hundred one trillion, one billion, three hundred twelve million, one hundred two thousand, two hundred twenty-one".