1213423125441 has 4 divisors (see below), whose sum is σ = 1617897500592. Its totient is φ = 808948750292.

The previous prime is 1213423125433. The next prime is 1213423125493. The reversal of 1213423125441 is 1445213243121.

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 a cyclic number.

It is not a de Polignac number, because 1213423125441 - 2³ = 1213423125433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213423125641) 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, 202237187571 + ... + 202237187576.

It is an arithmetic number, because the mean of its divisors is an integer number (404474375148).

Almost surely, 2^{1213423125441} is an apocalyptic number.

It is an amenable number.

1213423125441 is a deficient number, since it is larger than the sum of its proper divisors (404474375151).

1213423125441 is an equidigital number, since it uses as much as digits as its factorization.

1213423125441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404474375150.

The product of its digits is 23040, while the sum is 33.

Adding to 1213423125441 its reverse (1445213243121), we get a palindrome (2658636368562).

The spelling of 1213423125441 in words is "one trillion, two hundred thirteen billion, four hundred twenty-three million, one hundred twenty-five thousand, four hundred forty-one".