220628123 has 2 divisors, whose sum is σ = 220628124. Its totient is φ = 220628122.

The previous prime is 220628113. The next prime is 220628129. The reversal of 220628123 is 321826022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220628123 - 2¹⁴ = 220611739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220628092 and 220628101.

It is not a weakly prime, because it can be changed into another prime (220628129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110314061 + 110314062.

It is an arithmetic number, because the mean of its divisors is an integer number (110314062).

Almost surely, 2^220628123 is an apocalyptic number.

220628123 is a deficient number, since it is larger than the sum of its proper divisors (1).

220628123 is an equidigital number, since it uses as much as digits as its factorization.

220628123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 220628123 is about 14853.5559042271. Note that the first 3 decimals coincide. The cubic root of 220628123 is about 604.2550519623.

The spelling of 220628123 in words is "two hundred twenty million, six hundred twenty-eight thousand, one hundred twenty-three".