1340331442121 has 4 divisors (see below), whose sum is σ = 1531807362432. Its totient is φ = 1148855521812.

The previous prime is 1340331442117. The next prime is 1340331442133. The reversal of 1340331442121 is 1212441330431.

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 1340331442121 - 2² = 1340331442117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340331442171) 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, 95737960145 + ... + 95737960158.

It is an arithmetic number, because the mean of its divisors is an integer number (382951840608).

Almost surely, 2^{1340331442121} is an apocalyptic number.

It is an amenable number.

1340331442121 is a deficient number, since it is larger than the sum of its proper divisors (191475920311).

1340331442121 is an equidigital number, since it uses as much as digits as its factorization.

1340331442121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191475920310.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 1340331442121 its reverse (1212441330431), we get a palindrome (2552772772552).

The spelling of 1340331442121 in words is "one trillion, three hundred forty billion, three hundred thirty-one million, four hundred forty-two thousand, one hundred twenty-one".