144331331134121 has 4 divisors (see below), whose sum is σ = 144338879468244. Its totient is φ = 144323782800000.

The previous prime is 144331331134103. The next prime is 144331331134127. The reversal of 144331331134121 is 121431133133441.

It is a happy number.

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 67577261450521 + 76754069683600 = 8220539^2 + 8760940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144331331134121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144331331134127) 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, 3774138380 + ... + 3774176621.

It is an arithmetic number, because the mean of its divisors is an integer number (36084719867061).

Almost surely, 2^{144331331134121} is an apocalyptic number.

It is an amenable number.

144331331134121 is a deficient number, since it is larger than the sum of its proper divisors (7548334123).

144331331134121 is an equidigital number, since it uses as much as digits as its factorization.

144331331134121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7548334122.

The product of its digits is 31104, while the sum is 35.

Adding to 144331331134121 its reverse (121431133133441), we get a palindrome (265762464267562).

The spelling of 144331331134121 in words is "one hundred forty-four trillion, three hundred thirty-one billion, three hundred thirty-one million, one hundred thirty-four thousand, one hundred twenty-one".