2216978123 has 2 divisors, whose sum is σ = 2216978124. Its totient is φ = 2216978122.

The previous prime is 2216978063. The next prime is 2216978129. The reversal of 2216978123 is 3218796122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2216978123 - 2⁶ = 2216978059 is a prime.

It is not a weakly prime, because it can be changed into another prime (2216978129) 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, 1108489061 + 1108489062.

It is an arithmetic number, because the mean of its divisors is an integer number (1108489062).

Almost surely, 2^2216978123 is an apocalyptic number.

2216978123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2216978123 is an equidigital number, since it uses as much as digits as its factorization.

2216978123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 41.

The square root of 2216978123 is about 47084.7971536461. The cubic root of 2216978123 is about 1303.9285741534.

The spelling of 2216978123 in words is "two billion, two hundred sixteen million, nine hundred seventy-eight thousand, one hundred twenty-three".