220220023123 has 2 divisors, whose sum is σ = 220220023124. Its totient is φ = 220220023122.

The previous prime is 220220023117. The next prime is 220220023147. The reversal of 220220023123 is 321320022022.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220220023123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220220023123.

It is not a weakly prime, because it can be changed into another prime (220220023423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110110011561 + 110110011562.

It is an arithmetic number, because the mean of its divisors is an integer number (110110011562).

Almost surely, 2^220220023123 is an apocalyptic number.

220220023123 is a deficient number, since it is larger than the sum of its proper divisors (1).

220220023123 is an equidigital number, since it uses as much as digits as its factorization.

220220023123 is an odious number, because the sum of its binary digits is odd.

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

Adding to 220220023123 its reverse (321320022022), we get a palindrome (541540045145).

The spelling of 220220023123 in words is "two hundred twenty billion, two hundred twenty million, twenty-three thousand, one hundred twenty-three".