1121053505 has 24 divisors (see below), whose sum is σ = 1592434536. Its totient is φ = 752590080.

The previous prime is 1121053499. The next prime is 1121053537. The reversal of 1121053505 is 5053501211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18215824 + 1102837681 = 4268^2 + 33209^2 .

It is not a de Polignac number, because 1121053505 - 2⁴ = 1121053489 is a prime.

It is a super-2 number, since 2×1121053505² = 2513521922145570050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63404 + ... + 79133.

It is an arithmetic number, because the mean of its divisors is an integer number (66351439).

Almost surely, 2^1121053505 is an apocalyptic number.

It is an amenable number.

1121053505 is a deficient number, since it is larger than the sum of its proper divisors (471381031).

1121053505 is a wasteful number, since it uses less digits than its factorization.

1121053505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142577 (or 142566 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 1121053505 is about 33482.1371032376. The cubic root of 1121053505 is about 1038.8243325258.

Adding to 1121053505 its reverse (5053501211), we get a palindrome (6174554716).

The spelling of 1121053505 in words is "one billion, one hundred twenty-one million, fifty-three thousand, five hundred five".