221412433 has 8 divisors (see below), whose sum is σ = 241679520. Its totient is φ = 201168480.

The previous prime is 221412409. The next prime is 221412473. The reversal of 221412433 is 334214122.

221412433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221412433 - 2²⁵ = 187858001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221412473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18798 + ... + 28216.

It is an arithmetic number, because the mean of its divisors is an integer number (30209940).

Almost surely, 2^221412433 is an apocalyptic number.

It is an amenable number.

221412433 is a deficient number, since it is larger than the sum of its proper divisors (20267087).

221412433 is a wasteful number, since it uses less digits than its factorization.

221412433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11567.

The product of its digits is 1152, while the sum is 22.

The square root of 221412433 is about 14879.9339044231. The cubic root of 221412433 is about 604.9702264336.

Adding to 221412433 its reverse (334214122), we get a palindrome (555626555).

The spelling of 221412433 in words is "two hundred twenty-one million, four hundred twelve thousand, four hundred thirty-three".