221411640404475 has 18 divisors (see below), whose sum is σ = 396572849258196. Its totient is φ = 118086208215600.

The previous prime is 221411640404453. The next prime is 221411640404477. The reversal of 221411640404475 is 574404046114122.

221411640404475 is a `hidden beast` number, since 2 + 2 + 1 + 4 + 1 + 164 + 0 + 40 + 447 + 5 = 666.

It is not a de Polignac number, because 221411640404475 - 2⁵ = 221411640404443 is a prime.

It is a super-2 number, since 2×221411640404475² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 221411640404475.

It is not an unprimeable number, because it can be changed into a prime (221411640404477) 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 17 ways as a sum of consecutive naturals, for example, 492025867341 + ... + 492025867790.

Almost surely, 2^{221411640404475} is an apocalyptic number.

221411640404475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

221411640404475 is a deficient number, since it is larger than the sum of its proper divisors (175161208853721).

221411640404475 is a wasteful number, since it uses less digits than its factorization.

221411640404475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984051735147 (or 984051735139 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 45.

Adding to 221411640404475 its reverse (574404046114122), we get a palindrome (795815686518597).

The spelling of 221411640404475 in words is "two hundred twenty-one trillion, four hundred eleven billion, six hundred forty million, four hundred four thousand, four hundred seventy-five".