1312120542241 has 4 divisors (see below), whose sum is σ = 1313143240752. Its totient is φ = 1311097843732.

The previous prime is 1312120542191. The next prime is 1312120542281. The reversal of 1312120542241 is 1422450212131.

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 a cyclic number.

It is not a de Polignac number, because 1312120542241 - 2¹⁷ = 1312120411169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312120542281) 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, 511347331 + ... + 511349896.

It is an arithmetic number, because the mean of its divisors is an integer number (328285810188).

Almost surely, 2^{1312120542241} is an apocalyptic number.

It is an amenable number.

1312120542241 is a deficient number, since it is larger than the sum of its proper divisors (1022698511).

1312120542241 is a wasteful number, since it uses less digits than its factorization.

1312120542241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022698510.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 1312120542241 its reverse (1422450212131), we get a palindrome (2734570754372).

The spelling of 1312120542241 in words is "one trillion, three hundred twelve billion, one hundred twenty million, five hundred forty-two thousand, two hundred forty-one".