1123466521 has 4 divisors (see below), whose sum is σ = 1147370112. Its totient is φ = 1099562932.

The previous prime is 1123466497. The next prime is 1123466623. The reversal of 1123466521 is 1256643211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1123466521 - 2⁵ = 1123466489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123466021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11951725 + ... + 11951818.

It is an arithmetic number, because the mean of its divisors is an integer number (286842528).

Almost surely, 2^1123466521 is an apocalyptic number.

It is an amenable number.

1123466521 is a deficient number, since it is larger than the sum of its proper divisors (23903591).

1123466521 is an equidigital number, since it uses as much as digits as its factorization.

1123466521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23903590.

The product of its digits is 8640, while the sum is 31.

The square root of 1123466521 is about 33518.1521119527. The cubic root of 1123466521 is about 1039.5691388927.

The spelling of 1123466521 in words is "one billion, one hundred twenty-three million, four hundred sixty-six thousand, five hundred twenty-one".