1232043152521 has 4 divisors (see below), whose sum is σ = 1245886334100. Its totient is φ = 1218199970944.

The previous prime is 1232043152513. The next prime is 1232043152537. The reversal of 1232043152521 is 1252513402321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 697149852025 + 534893300496 = 834955^2 + 731364^2 .

It is a cyclic number.

It is not a de Polignac number, because 1232043152521 - 2³ = 1232043152513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1232043152621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6921590656 + ... + 6921590833.

It is an arithmetic number, because the mean of its divisors is an integer number (311471583525).

Almost surely, 2^{1232043152521} is an apocalyptic number.

It is an amenable number.

1232043152521 is a deficient number, since it is larger than the sum of its proper divisors (13843181579).

1232043152521 is an equidigital number, since it uses as much as digits as its factorization.

1232043152521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13843181578.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 1232043152521 its reverse (1252513402321), we get a palindrome (2484556554842).

The spelling of 1232043152521 in words is "one trillion, two hundred thirty-two billion, forty-three million, one hundred fifty-two thousand, five hundred twenty-one".