1113024721 has 2 divisors, whose sum is σ = 1113024722. Its totient is φ = 1113024720.

The previous prime is 1113024709. The next prime is 1113024743. The reversal of 1113024721 is 1274203111.

It is a happy number.

It is an a-pointer prime, because the next prime (1113024743) can be obtained adding 1113024721 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1010286225 + 102738496 = 31785^2 + 10136^2 .

It is a cyclic number.

It is not a de Polignac number, because 1113024721 - 2²¹ = 1110927569 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1113024692 and 1113024701.

It is not a weakly prime, because it can be changed into another prime (1113024761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556512360 + 556512361.

It is an arithmetic number, because the mean of its divisors is an integer number (556512361).

Almost surely, 2^1113024721 is an apocalyptic number.

It is an amenable number.

1113024721 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113024721 is an equidigital number, since it uses as much as digits as its factorization.

1113024721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 1113024721 is about 33362.0251333758. The cubic root of 1113024721 is about 1036.3384307111.

Adding to 1113024721 its reverse (1274203111), we get a palindrome (2387227832).

The spelling of 1113024721 in words is "one billion, one hundred thirteen million, twenty-four thousand, seven hundred twenty-one".