101221203013 has 24 divisors (see below), whose sum is σ = 118236148800. Its totient is φ = 86401219968.

The previous prime is 101221203011. The next prime is 101221203137. The reversal of 101221203013 is 310302122101.

It is not a de Polignac number, because 101221203013 - 2¹ = 101221203011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101221203011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22396768 + ... + 22401286.

It is an arithmetic number, because the mean of its divisors is an integer number (4926506200).

Almost surely, 2^101221203013 is an apocalyptic number.

It is an amenable number.

101221203013 is a deficient number, since it is larger than the sum of its proper divisors (17014945787).

101221203013 is a wasteful number, since it uses less digits than its factorization.

101221203013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6329 (or 6322 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 101221203013 its reverse (310302122101), we get a palindrome (411523325114).

The spelling of 101221203013 in words is "one hundred one billion, two hundred twenty-one million, two hundred three thousand, thirteen".