1232412213121 has 4 divisors (see below), whose sum is σ = 1234833455700. Its totient is φ = 1229990970544.

The previous prime is 1232412213119. The next prime is 1232412213127. The reversal of 1232412213121 is 1213122142321.

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 422583204096 + 809829009025 = 650064^2 + 899905^2 .

It is a cyclic number.

It is not a de Polignac number, because 1232412213121 - 2¹ = 1232412213119 is a prime.

It is a super-2 number, since 2×1232412213121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1232412213127) 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, 1210620526 + ... + 1210621543.

It is an arithmetic number, because the mean of its divisors is an integer number (308708363925).

Almost surely, 2^{1232412213121} is an apocalyptic number.

It is an amenable number.

1232412213121 is a deficient number, since it is larger than the sum of its proper divisors (2421242579).

1232412213121 is an equidigital number, since it uses as much as digits as its factorization.

1232412213121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2421242578.

The product of its digits is 1152, while the sum is 25.

Adding to 1232412213121 its reverse (1213122142321), we get a palindrome (2445534355442).

The spelling of 1232412213121 in words is "one trillion, two hundred thirty-two billion, four hundred twelve million, two hundred thirteen thousand, one hundred twenty-one".