221131102111313 has 4 divisors (see below), whose sum is σ = 222745197747300. Its totient is φ = 219517006475328.

The previous prime is 221131102111267. The next prime is 221131102111331. The reversal of 221131102111313 is 313111201131122.

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 178393607949649 + 42737494161664 = 13356407^2 + 6537392^2 .

It is a cyclic number.

It is not a de Polignac number, because 221131102111313 - 2¹⁸ = 221131101849169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221131102111363) 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, 807047817788 + ... + 807047818061.

It is an arithmetic number, because the mean of its divisors is an integer number (55686299436825).

Almost surely, 2^{221131102111313} is an apocalyptic number.

It is an amenable number.

221131102111313 is a deficient number, since it is larger than the sum of its proper divisors (1614095635987).

221131102111313 is a wasteful number, since it uses less digits than its factorization.

221131102111313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614095635986.

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 221131102111313 its reverse (313111201131122), we get a palindrome (534242303242435).

The spelling of 221131102111313 in words is "two hundred twenty-one trillion, one hundred thirty-one billion, one hundred two million, one hundred eleven thousand, three hundred thirteen".