1110116621 has 8 divisors (see below), whose sum is σ = 1131554424. Its totient is φ = 1088847360.

The previous prime is 1110116573. The next prime is 1110116653. The reversal of 1110116621 is 1266110111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 16491721 + 1093624900 = 4061^2 + 33070^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1110116621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1110116593 and 1110116602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1110116671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28796 + ... + 55221.

It is an arithmetic number, because the mean of its divisors is an integer number (141444303).

Almost surely, 2^1110116621 is an apocalyptic number.

It is an amenable number.

1110116621 is a deficient number, since it is larger than the sum of its proper divisors (21437803).

1110116621 is an equidigital number, since it uses as much as digits as its factorization.

1110116621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84271.

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

The square root of 1110116621 is about 33318.4126422613. The cubic root of 1110116621 is about 1035.4350652128.

Adding to 1110116621 its reverse (1266110111), we get a palindrome (2376226732).

The spelling of 1110116621 in words is "one billion, one hundred ten million, one hundred sixteen thousand, six hundred twenty-one".