221404214423 has 32 divisors (see below), whose sum is σ = 276915253248. Its totient is φ = 172628236800.

The previous prime is 221404214387. The next prime is 221404214441. The reversal of 221404214423 is 324412404122.

It is a happy number.

221404214423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221404214423 - 2⁶ = 221404214359 is a prime.

It is a super-2 number, since 2×221404214423² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221403214423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2865113 + ... + 2941373.

It is an arithmetic number, because the mean of its divisors is an integer number (8653601664).

Almost surely, 2^221404214423 is an apocalyptic number.

221404214423 is a deficient number, since it is larger than the sum of its proper divisors (55511038825).

221404214423 is a wasteful number, since it uses less digits than its factorization.

221404214423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77103.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 221404214423 its reverse (324412404122), we get a palindrome (545816618545).

The spelling of 221404214423 in words is "two hundred twenty-one billion, four hundred four million, two hundred fourteen thousand, four hundred twenty-three".