1121322545 has 32 divisors (see below), whose sum is σ = 1594705920. Its totient is φ = 740689920.

The previous prime is 1121322539. The next prime is 1121322551. The reversal of 1121322545 is 5452231211.

It is an interprime number because it is at equal distance from previous prime (1121322539) and next prime (1121322551).

It is not a de Polignac number, because 1121322545 - 2⁴ = 1121322529 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 246209 + ... + 250721.

It is an arithmetic number, because the mean of its divisors is an integer number (49834560).

Almost surely, 2^1121322545 is an apocalyptic number.

It is an amenable number.

1121322545 is a deficient number, since it is larger than the sum of its proper divisors (473383375).

1121322545 is a wasteful number, since it uses less digits than its factorization.

1121322545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4785.

The product of its digits is 2400, while the sum is 26.

The square root of 1121322545 is about 33486.1545269086. The cubic root of 1121322545 is about 1038.9074278590.

Adding to 1121322545 its reverse (5452231211), we get a palindrome (6573553756).

The spelling of 1121322545 in words is "one billion, one hundred twenty-one million, three hundred twenty-two thousand, five hundred forty-five".