1121161245 has 8 divisors (see below), whose sum is σ = 1793858016. Its totient is φ = 597952656.

The previous prime is 1121161219. The next prime is 1121161319. The reversal of 1121161245 is 5421611211.

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

It is not a de Polignac number, because 1121161245 - 2¹⁴ = 1121144861 is a prime.

It is a congruent number.

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, 37372027 + ... + 37372056.

It is an arithmetic number, because the mean of its divisors is an integer number (224232252).

Almost surely, 2^1121161245 is an apocalyptic number.

1121161245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1121161245 is a deficient number, since it is larger than the sum of its proper divisors (672696771).

1121161245 is an equidigital number, since it uses as much as digits as its factorization.

1121161245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74744091.

The product of its digits is 480, while the sum is 24.

The square root of 1121161245 is about 33483.7459821926. The cubic root of 1121161245 is about 1038.8576105533.

Adding to 1121161245 its reverse (5421611211), we get a palindrome (6542772456).

The spelling of 1121161245 in words is "one billion, one hundred twenty-one million, one hundred sixty-one thousand, two hundred forty-five".