1121245345 has 8 divisors (see below), whose sum is σ = 1467812160. Its totient is φ = 815451120.

The previous prime is 1121245337. The next prime is 1121245379. The reversal of 1121245345 is 5435421211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1121245345 - 2³ = 1121245337 is a prime.

It is a super-2 number, since 2×1121245345² = 2514382247368338050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10193085 + ... + 10193194.

It is an arithmetic number, because the mean of its divisors is an integer number (183476520).

Almost surely, 2^1121245345 is an apocalyptic number.

It is an amenable number.

1121245345 is a deficient number, since it is larger than the sum of its proper divisors (346566815).

1121245345 is a wasteful number, since it uses less digits than its factorization.

1121245345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20386295.

The product of its digits is 4800, while the sum is 28.

The square root of 1121245345 is about 33485.0017918470. The cubic root of 1121245345 is about 1038.8835853305.

Adding to 1121245345 its reverse (5435421211), we get a palindrome (6556666556).

The spelling of 1121245345 in words is "one billion, one hundred twenty-one million, two hundred forty-five thousand, three hundred forty-five".