101001100202221 has 4 divisors (see below), whose sum is σ = 102042348658012. Its totient is φ = 99959851746432.

The previous prime is 101001100202207. The next prime is 101001100202231. The reversal of 101001100202221 is 122202001100101.

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 21841733108196 + 79159367094025 = 4673514^2 + 8897155^2 .

It is a cyclic number.

It is not a de Polignac number, because 101001100202221 - 2²⁹ = 101000563331309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101001100202231) 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, 520624227750 + ... + 520624227943.

It is an arithmetic number, because the mean of its divisors is an integer number (25510587164503).

Almost surely, 2^{101001100202221} is an apocalyptic number.

It is an amenable number.

101001100202221 is a deficient number, since it is larger than the sum of its proper divisors (1041248455791).

101001100202221 is an equidigital number, since it uses as much as digits as its factorization.

101001100202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041248455790.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 101001100202221 its reverse (122202001100101), we get a palindrome (223203101302322).

The spelling of 101001100202221 in words is "one hundred one trillion, one billion, one hundred million, two hundred two thousand, two hundred twenty-one".