1241233312321 has 4 divisors (see below), whose sum is σ = 1241407919700. Its totient is φ = 1241058704944.

The previous prime is 1241233312303. The next prime is 1241233312337. The reversal of 1241233312321 is 1232133321421.

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 844193440000 + 397039872321 = 918800^2 + 630111^2 .

It is a cyclic number.

It is not a de Polignac number, because 1241233312321 - 2⁵ = 1241233312289 is a prime.

It is a super-2 number, since 2×1241233312321² (a number of 25 digits) 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 1241233312321.

It is not an unprimeable number, because it can be changed into a prime (1241233312351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87293026 + ... + 87307243.

It is an arithmetic number, because the mean of its divisors is an integer number (310351979925).

Almost surely, 2^{1241233312321} is an apocalyptic number.

It is an amenable number.

1241233312321 is a deficient number, since it is larger than the sum of its proper divisors (174607379).

1241233312321 is an equidigital number, since it uses as much as digits as its factorization.

1241233312321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174607378.

The product of its digits is 5184, while the sum is 28.

Adding to 1241233312321 its reverse (1232133321421), we get a palindrome (2473366633742).

The spelling of 1241233312321 in words is "one trillion, two hundred forty-one billion, two hundred thirty-three million, three hundred twelve thousand, three hundred twenty-one".