111311132312221 has 8 divisors (see below), whose sum is σ = 114901935277824. Its totient is φ = 107720336926560.

The previous prime is 111311132312197. The next prime is 111311132312227. The reversal of 111311132312221 is 122213231113111.

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 111311132312221 - 2²⁷ = 111310998094493 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 (111311132312227) 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 7 ways as a sum of consecutive naturals, for example, 57319266 + ... + 59229388.

It is an arithmetic number, because the mean of its divisors is an integer number (14362741909728).

Almost surely, 2^{111311132312221} is an apocalyptic number.

It is an amenable number.

111311132312221 is a deficient number, since it is larger than the sum of its proper divisors (3590802965603).

111311132312221 is a wasteful number, since it uses less digits than its factorization.

111311132312221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3789971.

The product of its digits is 432, while the sum is 25.

Adding to 111311132312221 its reverse (122213231113111), we get a palindrome (233524363425332).

The spelling of 111311132312221 in words is "one hundred eleven trillion, three hundred eleven billion, one hundred thirty-two million, three hundred twelve thousand, two hundred twenty-one".