1344213401021 has 2 divisors, whose sum is σ = 1344213401022. Its totient is φ = 1344213401020.

The previous prime is 1344213401017. The next prime is 1344213401051. The reversal of 1344213401021 is 1201043124431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 987219100921 + 356994300100 = 993589^2 + 597490^2 .

It is a cyclic number.

It is not a de Polignac number, because 1344213401021 - 2² = 1344213401017 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1344213401051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672106700510 + 672106700511.

It is an arithmetic number, because the mean of its divisors is an integer number (672106700511).

Almost surely, 2^{1344213401021} is an apocalyptic number.

It is an amenable number.

1344213401021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1344213401021 is an equidigital number, since it uses as much as digits as its factorization.

1344213401021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 1344213401021 its reverse (1201043124431), we get a palindrome (2545256525452).

The spelling of 1344213401021 in words is "one trillion, three hundred forty-four billion, two hundred thirteen million, four hundred one thousand, twenty-one".