1116016621 has 4 divisors (see below), whose sum is σ = 1116329632. Its totient is φ = 1115703612.

The previous prime is 1116016619. The next prime is 1116016631. The reversal of 1116016621 is 1266106111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1116016621 - 2¹ = 1116016619 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 (1116016631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151095 + ... + 158308.

It is an arithmetic number, because the mean of its divisors is an integer number (279082408).

Almost surely, 2^1116016621 is an apocalyptic number.

It is an amenable number.

1116016621 is a deficient number, since it is larger than the sum of its proper divisors (313011).

1116016621 is an equidigital number, since it uses as much as digits as its factorization.

1116016621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313010.

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

The square root of 1116016621 is about 33406.8349443643. The cubic root of 1116016621 is about 1037.2661869398.

The spelling of 1116016621 in words is "one billion, one hundred sixteen million, sixteen thousand, six hundred twenty-one".