1121445533 has 8 divisors (see below), whose sum is σ = 1227509976. Its totient is φ = 1018209600.

The previous prime is 1121445517. The next prime is 1121445557. The reversal of 1121445533 is 3355441211.

It can be written as a sum of positive squares in 4 ways, for example, as 227315929 + 894129604 = 15077^2 + 29902^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1121445533 - 2⁴ = 1121445517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1121445496 and 1121445505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121445583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 706298 + ... + 707883.

It is an arithmetic number, because the mean of its divisors is an integer number (153438747).

Almost surely, 2^1121445533 is an apocalyptic number.

1121445533 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1121445533 is a deficient number, since it is larger than the sum of its proper divisors (106064443).

1121445533 is a wasteful number, since it uses less digits than its factorization.

1121445533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1414255.

The product of its digits is 7200, while the sum is 29.

The square root of 1121445533 is about 33487.9908773279. The cubic root of 1121445533 is about 1038.9454093408.

Adding to 1121445533 its reverse (3355441211), we get a palindrome (4476886744).

The spelling of 1121445533 in words is "one billion, one hundred twenty-one million, four hundred forty-five thousand, five hundred thirty-three".