220432123 has 2 divisors, whose sum is σ = 220432124. Its totient is φ = 220432122.

The previous prime is 220432109. The next prime is 220432133. The reversal of 220432123 is 321234022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220432123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220432123.

It is not a weakly prime, because it can be changed into another prime (220432133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110216061 + 110216062.

It is an arithmetic number, because the mean of its divisors is an integer number (110216062).

Almost surely, 2^220432123 is an apocalyptic number.

220432123 is a deficient number, since it is larger than the sum of its proper divisors (1).

220432123 is an equidigital number, since it uses as much as digits as its factorization.

220432123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 220432123 is about 14846.9566915244. The cubic root of 220432123 is about 604.0760643865.

Adding to 220432123 its reverse (321234022), we get a palindrome (541666145).

The spelling of 220432123 in words is "two hundred twenty million, four hundred thirty-two thousand, one hundred twenty-three".