1121433551 has 6 divisors (see below), whose sum is σ = 1304524800. Its totient is φ = 961228716.

The previous prime is 1121433541. The next prime is 1121433617. The reversal of 1121433551 is 1553341211.

It is not a de Polignac number, because 1121433551 - 2³⁰ = 47691727 is a prime.

It is a super-2 number, since 2×1121433551² = 2515226418616939202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121433551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121433541) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11443151 + ... + 11443248.

It is an arithmetic number, because the mean of its divisors is an integer number (217420800).

Almost surely, 2^1121433551 is an apocalyptic number.

1121433551 is a deficient number, since it is larger than the sum of its proper divisors (183091249).

1121433551 is an equidigital number, since it uses as much as digits as its factorization.

1121433551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22886413 (or 22886406 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

The square root of 1121433551 is about 33487.8119768969. The cubic root of 1121433551 is about 1038.9417091498.

Adding to 1121433551 its reverse (1553341211), we get a palindrome (2674774762).

The spelling of 1121433551 in words is "one billion, one hundred twenty-one million, four hundred thirty-three thousand, five hundred fifty-one".