1121404443 has 16 divisors (see below), whose sum is σ = 1534296576. Its totient is φ = 728209440.

The previous prime is 1121404397. The next prime is 1121404463. The reversal of 1121404443 is 3444041211.

It is not a de Polignac number, because 1121404443 - 2¹² = 1121400347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121404463) 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, 10905 + ... + 48597.

It is an arithmetic number, because the mean of its divisors is an integer number (95893536).

Almost surely, 2^1121404443 is an apocalyptic number.

1121404443 is a deficient number, since it is larger than the sum of its proper divisors (412892133).

1121404443 is a wasteful number, since it uses less digits than its factorization.

1121404443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37954.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 1121404443 is about 33487.3773681965. The cubic root of 1121404443 is about 1038.9327201265.

Adding to 1121404443 its reverse (3444041211), we get a palindrome (4565445654).

The spelling of 1121404443 in words is "one billion, one hundred twenty-one million, four hundred four thousand, four hundred forty-three".