2181123283 has 2 divisors, whose sum is σ = 2181123284. Its totient is φ = 2181123282.

The previous prime is 2181123229. The next prime is 2181123299. The reversal of 2181123283 is 3823211812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2181123283 - 2¹³ = 2181115091 is a prime.

It is not a weakly prime, because it can be changed into another prime (2181123223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1090561641 + 1090561642.

It is an arithmetic number, because the mean of its divisors is an integer number (1090561642).

Almost surely, 2^2181123283 is an apocalyptic number.

2181123283 is a deficient number, since it is larger than the sum of its proper divisors (1).

2181123283 is an equidigital number, since it uses as much as digits as its factorization.

2181123283 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 31.

The square root of 2181123283 is about 46702.4976098709. The cubic root of 2181123283 is about 1296.8609238888.

The spelling of 2181123283 in words is "two billion, one hundred eighty-one million, one hundred twenty-three thousand, two hundred eighty-three".