400001222099993 has 2 divisors, whose sum is σ = 400001222099994. Its totient is φ = 400001222099992.

The previous prime is 400001222099959. The next prime is 400001222100041. The reversal of 400001222099993 is 399990222100004.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 235931688964624 + 164069533135369 = 15360068^2 + 12808963^2 .

It is a cyclic number.

It is not a de Polignac number, because 400001222099993 - 2⁴² = 395603175588889 is a prime.

It is not a weakly prime, because it can be changed into another prime (400001222099923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200000611049996 + 200000611049997.

It is an arithmetic number, because the mean of its divisors is an integer number (200000611049997).

Almost surely, 2^{400001222099993} is an apocalyptic number.

It is an amenable number.

400001222099993 is a deficient number, since it is larger than the sum of its proper divisors (1).

400001222099993 is an equidigital number, since it uses as much as digits as its factorization.

400001222099993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 629856, while the sum is 50.

Adding to 400001222099993 its reverse (399990222100004), we get a palindrome (799991444199997).

The spelling of 400001222099993 in words is "four hundred trillion, one billion, two hundred twenty-two million, ninety-nine thousand, nine hundred ninety-three".