111323131110221 has 8 divisors (see below), whose sum is σ = 119910469415424. Its totient is φ = 103048059652560.

The previous prime is 111323131110197. The next prime is 111323131110229. The reversal of 111323131110221 is 122011131323111.

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 111323131110221 - 2⁴² = 106925084599117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111323131110229) 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, 78066711146 + ... + 78066712571.

It is an arithmetic number, because the mean of its divisors is an integer number (14988808676928).

Almost surely, 2^{111323131110221} is an apocalyptic number.

It is an amenable number.

111323131110221 is a deficient number, since it is larger than the sum of its proper divisors (8587338305203).

111323131110221 is a wasteful number, since it uses less digits than its factorization.

111323131110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156133423771.

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

Adding to 111323131110221 its reverse (122011131323111), we get a palindrome (233334262433332).

The spelling of 111323131110221 in words is "one hundred eleven trillion, three hundred twenty-three billion, one hundred thirty-one million, one hundred ten thousand, two hundred twenty-one".