221232400043 has 4 divisors (see below), whose sum is σ = 221284178808. Its totient is φ = 221180621280.

The previous prime is 221232400009. The next prime is 221232400063. The reversal of 221232400043 is 340004232122.

221232400043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221232400043 - 2¹⁰ = 221232399019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221232399991 and 221232400018.

It is not an unprimeable number, because it can be changed into a prime (221232400063) 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 3 ways as a sum of consecutive naturals, for example, 25882973 + ... + 25891518.

It is an arithmetic number, because the mean of its divisors is an integer number (55321044702).

Almost surely, 2^221232400043 is an apocalyptic number.

221232400043 is a deficient number, since it is larger than the sum of its proper divisors (51778765).

221232400043 is an equidigital number, since it uses as much as digits as its factorization.

221232400043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51778764.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 221232400043 its reverse (340004232122), we get a palindrome (561236632165).

The spelling of 221232400043 in words is "two hundred twenty-one billion, two hundred thirty-two million, four hundred thousand, forty-three".