101102221211021 has 4 divisors (see below), whose sum is σ = 101127043758972. Its totient is φ = 101077398663072.

The previous prime is 101102221211011. The next prime is 101102221211053. The reversal of 101102221211021 is 120112122201101.

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 6133493074921 + 94968728136100 = 2476589^2 + 9745190^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101102221211021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101102221211011) 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, 12411267866 + ... + 12411276011.

It is an arithmetic number, because the mean of its divisors is an integer number (25281760939743).

Almost surely, 2^{101102221211021} is an apocalyptic number.

It is an amenable number.

101102221211021 is a deficient number, since it is larger than the sum of its proper divisors (24822547951).

101102221211021 is an equidigital number, since it uses as much as digits as its factorization.

101102221211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24822547950.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 101102221211021 its reverse (120112122201101), we get a palindrome (221214343412122).

The spelling of 101102221211021 in words is "one hundred one trillion, one hundred two billion, two hundred twenty-one million, two hundred eleven thousand, twenty-one".