2013310011221 has 4 divisors (see below), whose sum is σ = 2014695635532.
Its totient is φ = 2011924386912.
The previous prime is 2013310011197. The next prime is 2013310011239. The reversal of 2013310011221 is 1221100133102.
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 1933529184196 + 79780827025 = 1390514^2 + 282455^2
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-2013310011221 is a prime.
It is a Duffinian number.
It is a Curzon number.
It is a self number, because there is not a number n which added to its sum of digits gives 2013310011221.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2013310011121) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 692809976 + ... + 692812881.
It is an arithmetic number, because the mean of its divisors is an integer number (503673908883).
Almost surely, 22013310011221 is an apocalyptic number.
It is an amenable number.
2013310011221 is a deficient number, since it is larger than the sum of its proper divisors (1385624311).
2013310011221 is a wasteful number, since it uses less digits than its factorization.
2013310011221 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1385624310.
The product of its (nonzero) digits is 72, while the sum is 17.
Adding to 2013310011221 its reverse (1221100133102), we get a palindrome (3234410144323).
The spelling of 2013310011221 in words is "two trillion, thirteen billion, three hundred ten million, eleven thousand, two hundred twenty-one".