2221880123 has 2 divisors, whose sum is σ = 2221880124. Its totient is φ = 2221880122.

The previous prime is 2221880107. The next prime is 2221880189. The reversal of 2221880123 is 3210881222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2221880123 - 2⁴ = 2221880107 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2221880623) 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, 1110940061 + 1110940062.

It is an arithmetic number, because the mean of its divisors is an integer number (1110940062).

Almost surely, 2^2221880123 is an apocalyptic number.

2221880123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221880123 is an equidigital number, since it uses as much as digits as its factorization.

2221880123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 2221880123 is about 47136.8234292469. The cubic root of 2221880123 is about 1304.8889132943. Note that the first 3 decimals are identical.

The spelling of 2221880123 in words is "two billion, two hundred twenty-one million, eight hundred eighty thousand, one hundred twenty-three".