111110321621 has 8 divisors (see below), whose sum is σ = 119691516000. Its totient is φ = 102534019632.

The previous prime is 111110321617. The next prime is 111110321653. The reversal of 111110321621 is 126123011111.

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 111110321621 - 2² = 111110321617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111110321593 and 111110321602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111110321821) 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, 1175855 + ... + 1266828.

It is an arithmetic number, because the mean of its divisors is an integer number (14961439500).

Almost surely, 2^111110321621 is an apocalyptic number.

It is an amenable number.

111110321621 is a deficient number, since it is larger than the sum of its proper divisors (8581194379).

111110321621 is a wasteful number, since it uses less digits than its factorization.

111110321621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2446195.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 111110321621 its reverse (126123011111), we get a palindrome (237233332732).

The spelling of 111110321621 in words is "one hundred eleven billion, one hundred ten million, three hundred twenty-one thousand, six hundred twenty-one".