221311110131 has 8 divisors (see below), whose sum is σ = 223714285104. Its totient is φ = 218919352320.

The previous prime is 221311110107. The next prime is 221311110157. The reversal of 221311110131 is 131011113122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221311110131 - 2²⁶ = 221244001267 is a prime.

It is a super-2 number, since 2×221311110131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221311110101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2815310 + ... + 2892851.

It is an arithmetic number, because the mean of its divisors is an integer number (27964285638).

Almost surely, 2^221311110131 is an apocalyptic number.

221311110131 is a deficient number, since it is larger than the sum of its proper divisors (2403174973).

221311110131 is a wasteful number, since it uses less digits than its factorization.

221311110131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5708581.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 221311110131 its reverse (131011113122), we get a palindrome (352322223253).

The spelling of 221311110131 in words is "two hundred twenty-one billion, three hundred eleven million, one hundred ten thousand, one hundred thirty-one".