221013313111 has 4 divisors (see below), whose sum is σ = 221022222232. Its totient is φ = 221004403992.

The previous prime is 221013313093. The next prime is 221013313123. The reversal of 221013313111 is 111313310122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221013313111 - 2¹⁵ = 221013280343 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 (221013413111) 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, 4417245 + ... + 4466998.

It is an arithmetic number, because the mean of its divisors is an integer number (55255555558).

Almost surely, 2^221013313111 is an apocalyptic number.

221013313111 is a deficient number, since it is larger than the sum of its proper divisors (8909121).

221013313111 is an equidigital number, since it uses as much as digits as its factorization.

221013313111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8909120.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 221013313111 its reverse (111313310122), we get a palindrome (332326623233).

The spelling of 221013313111 in words is "two hundred twenty-one billion, thirteen million, three hundred thirteen thousand, one hundred eleven".