405302211111 has 32 divisors (see below), whose sum is σ = 631757209600. Its totient is φ = 226348014816.

The previous prime is 405302211109. The next prime is 405302211151. The reversal of 405302211111 is 111112203504.

It is not a de Polignac number, because 405302211111 - 2¹ = 405302211109 is a prime.

It is a super-2 number, since 2×405302211111² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405302211151) 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 in 31 ways as a sum of consecutive naturals, for example, 955411 + ... + 1312788.

It is an arithmetic number, because the mean of its divisors is an integer number (19742412800).

Almost surely, 2^405302211111 is an apocalyptic number.

405302211111 is a deficient number, since it is larger than the sum of its proper divisors (226454998489).

405302211111 is a wasteful number, since it uses less digits than its factorization.

405302211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2268403.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 405302211111 its reverse (111112203504), we get a palindrome (516414414615).

The spelling of 405302211111 in words is "four hundred five billion, three hundred two million, two hundred eleven thousand, one hundred eleven".