405221331434111 has 16 divisors (see below), whose sum is σ = 410980979865600. Its totient is φ = 399488640775488.

The previous prime is 405221331434107. The next prime is 405221331434149. The reversal of 405221331434111 is 111434133122504.

It is a cyclic number.

It is not a de Polignac number, because 405221331434111 - 2² = 405221331434107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405221331434411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 503577656 + ... + 504381698.

It is an arithmetic number, because the mean of its divisors is an integer number (25686311241600).

Almost surely, 2^{405221331434111} is an apocalyptic number.

405221331434111 is a deficient number, since it is larger than the sum of its proper divisors (5759648431489).

405221331434111 is a wasteful number, since it uses less digits than its factorization.

405221331434111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820798.

The product of its (nonzero) digits is 34560, while the sum is 35.

Adding to 405221331434111 its reverse (111434133122504), we get a palindrome (516655464556615).

The spelling of 405221331434111 in words is "four hundred five trillion, two hundred twenty-one billion, three hundred thirty-one million, four hundred thirty-four thousand, one hundred eleven".