1122712505 has 8 divisors (see below), whose sum is σ = 1347726600. Its totient is φ = 897855616.

The previous prime is 1122712477. The next prime is 1122712511. The reversal of 1122712505 is 5052172211.

It can be written as a sum of positive squares in 4 ways, for example, as 134490409 + 988222096 = 11597^2 + 31436^2 .

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 1122712505 - 2⁶ = 1122712441 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22970 + ... + 52659.

It is an arithmetic number, because the mean of its divisors is an integer number (168465825).

Almost surely, 2^1122712505 is an apocalyptic number.

It is an amenable number.

1122712505 is a deficient number, since it is larger than the sum of its proper divisors (225014095).

1122712505 is an equidigital number, since it uses as much as digits as its factorization.

1122712505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78603.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 1122712505 is about 33506.9023486206. The cubic root of 1122712505 is about 1039.3365174555.

Adding to 1122712505 its reverse (5052172211), we get a palindrome (6174884716).

It can be divided in two parts, 11227 and 12505, that added together give a palindrome (23732).

The spelling of 1122712505 in words is "one billion, one hundred twenty-two million, seven hundred twelve thousand, five hundred five".