2143129999 has 2 divisors, whose sum is σ = 2143130000. Its totient is φ = 2143129998.

The previous prime is 2143129997. The next prime is 2143130029. The reversal of 2143129999 is 9999213412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2143129999 - 2¹ = 2143129997 is a prime.

It is a super-2 number, since 2×2143129999² = 9186012385227480002, which contains 22 as substring.

Together with 2143129997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2143129991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071564999 + 1071565000.

It is an arithmetic number, because the mean of its divisors is an integer number (1071565000).

Almost surely, 2^2143129999 is an apocalyptic number.

2143129999 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143129999 is an equidigital number, since it uses as much as digits as its factorization.

2143129999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 314928, while the sum is 49.

The square root of 2143129999 is about 46293.9520779983. The cubic root of 2143129999 is about 1289.2867076019.

The spelling of 2143129999 in words is "two billion, one hundred forty-three million, one hundred twenty-nine thousand, nine hundred ninety-nine".