1121126523 has 16 divisors (see below), whose sum is σ = 1726655616. Its totient is φ = 639501440.

The previous prime is 1121126497. The next prime is 1121126533. The reversal of 1121126523 is 3256211211.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1121126523 - 2⁵ = 1121126491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121126493 and 1121126502.

It is not an unprimeable number, because it can be changed into a prime (1121126533) 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, 998661 + ... + 999782.

It is an arithmetic number, because the mean of its divisors is an integer number (107915976).

Almost surely, 2^1121126523 is an apocalyptic number.

1121126523 is a deficient number, since it is larger than the sum of its proper divisors (605529093).

1121126523 is a wasteful number, since it uses less digits than its factorization.

1121126523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998474.

The product of its digits is 720, while the sum is 24.

The square root of 1121126523 is about 33483.2274878035. The cubic root of 1121126523 is about 1038.8468860816.

Adding to 1121126523 its reverse (3256211211), we get a palindrome (4377337734).

The spelling of 1121126523 in words is "one billion, one hundred twenty-one million, one hundred twenty-six thousand, five hundred twenty-three".