111361312221 has 8 divisors (see below), whose sum is σ = 153601810080. Its totient is φ = 71680844592.

The previous prime is 111361312147. The next prime is 111361312229. The reversal of 111361312221 is 122213163111.

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

It is not a de Polignac number, because 111361312221 - 2²³ = 111352923613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111361312191 and 111361312200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111361312229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 640007455 + ... + 640007628.

It is an arithmetic number, because the mean of its divisors is an integer number (19200226260).

Almost surely, 2^111361312221 is an apocalyptic number.

It is an amenable number.

111361312221 is a deficient number, since it is larger than the sum of its proper divisors (42240497859).

111361312221 is a wasteful number, since it uses less digits than its factorization.

111361312221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280015115.

The product of its digits is 432, while the sum is 24.

Adding to 111361312221 its reverse (122213163111), we get a palindrome (233574475332).

The spelling of 111361312221 in words is "one hundred eleven billion, three hundred sixty-one million, three hundred twelve thousand, two hundred twenty-one".