1116263721 has 8 divisors (see below), whose sum is σ = 1505075040. Its totient is φ = 735814112.

The previous prime is 1116263719. The next prime is 1116263749. The reversal of 1116263721 is 1273626111.

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 1116263721 - 2¹ = 1116263719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1116263021) 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, 2090115 + ... + 2090648.

It is an arithmetic number, because the mean of its divisors is an integer number (188134380).

Almost surely, 2^1116263721 is an apocalyptic number.

It is an amenable number.

1116263721 is a deficient number, since it is larger than the sum of its proper divisors (388811319).

1116263721 is an equidigital number, since it uses as much as digits as its factorization.

1116263721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4180855.

The product of its digits is 3024, while the sum is 30.

The square root of 1116263721 is about 33410.5330846426. The cubic root of 1116263721 is about 1037.3427358476.

Adding to 1116263721 its reverse (1273626111), we get a palindrome (2389889832).

The spelling of 1116263721 in words is "one billion, one hundred sixteen million, two hundred sixty-three thousand, seven hundred twenty-one".