4021343123401 has 2 divisors, whose sum is σ = 4021343123402. Its totient is φ = 4021343123400.

The previous prime is 4021343123393. The next prime is 4021343123407. The reversal of 4021343123401 is 1043213431204.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2741557735225 + 1279785388176 = 1655765^2 + 1131276^2 .

It is a cyclic number.

It is not a de Polignac number, because 4021343123401 - 2³ = 4021343123393 is a prime.

It is a super-2 number, since 2×4021343123401² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4021343123401.

It is not a weakly prime, because it can be changed into another prime (4021343123407) 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 as a sum of consecutive naturals, namely, 2010671561700 + 2010671561701.

It is an arithmetic number, because the mean of its divisors is an integer number (2010671561701).

Almost surely, 2^{4021343123401} is an apocalyptic number.

It is an amenable number.

4021343123401 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021343123401 is an equidigital number, since it uses as much as digits as its factorization.

4021343123401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 4021343123401 its reverse (1043213431204), we get a palindrome (5064556554605).

The spelling of 4021343123401 in words is "four trillion, twenty-one billion, three hundred forty-three million, one hundred twenty-three thousand, four hundred one".