221101313213 has 16 divisors (see below), whose sum is σ = 247020492672. Its totient is φ = 196208040000.

The previous prime is 221101313203. The next prime is 221101313261. The reversal of 221101313213 is 312313101122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 221101313213 - 2⁴ = 221101313197 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 (221101313203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1322606 + ... + 1480367.

It is an arithmetic number, because the mean of its divisors is an integer number (15438780792).

Almost surely, 2^221101313213 is an apocalyptic number.

It is an amenable number.

221101313213 is a deficient number, since it is larger than the sum of its proper divisors (25919179459).

221101313213 is a wasteful number, since it uses less digits than its factorization.

221101313213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2803156.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 221101313213 its reverse (312313101122), we get a palindrome (533414414335).

The spelling of 221101313213 in words is "two hundred twenty-one billion, one hundred one million, three hundred thirteen thousand, two hundred thirteen".