1121305415 has 4 divisors (see below), whose sum is σ = 1345566504. Its totient is φ = 897044328.

The previous prime is 1121305411. The next prime is 1121305481. The reversal of 1121305415 is 5145031211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1121305415 - 2² = 1121305411 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 (1121305411) 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, 112130537 + ... + 112130546.

It is an arithmetic number, because the mean of its divisors is an integer number (336391626).

Almost surely, 2^1121305415 is an apocalyptic number.

1121305415 is a deficient number, since it is larger than the sum of its proper divisors (224261089).

1121305415 is an equidigital number, since it uses as much as digits as its factorization.

1121305415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224261088.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1121305415 is about 33485.8987485777. The cubic root of 1121305415 is about 1038.9021375064.

Adding to 1121305415 its reverse (5145031211), we get a palindrome (6266336626).

The spelling of 1121305415 in words is "one billion, one hundred twenty-one million, three hundred five thousand, four hundred fifteen".