1121451305 has 16 divisors (see below), whose sum is σ = 1459698240. Its totient is φ = 822184128.

The previous prime is 1121451301. The next prime is 1121451313. The reversal of 1121451305 is 5031541211.

It is a cyclic number.

It is not a de Polignac number, because 1121451305 - 2² = 1121451301 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1121451301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53027 + ... + 71096.

It is an arithmetic number, because the mean of its divisors is an integer number (91231140).

Almost surely, 2^1121451305 is an apocalyptic number.

It is an amenable number.

1121451305 is a deficient number, since it is larger than the sum of its proper divisors (338246935).

1121451305 is a wasteful number, since it uses less digits than its factorization.

1121451305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124280.

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

The square root of 1121451305 is about 33488.0770573648. The cubic root of 1121451305 is about 1038.9471917970.

Adding to 1121451305 its reverse (5031541211), we get a palindrome (6152992516).

The spelling of 1121451305 in words is "one billion, one hundred twenty-one million, four hundred fifty-one thousand, three hundred five".