2143125001 has 2 divisors, whose sum is σ = 2143125002. Its totient is φ = 2143125000.

The previous prime is 2143124999. The next prime is 2143125029. The reversal of 2143125001 is 1005213412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1593925776 + 549199225 = 39924^2 + 23435^2 .

It is a cyclic number.

It is not a de Polignac number, because 2143125001 - 2¹ = 2143124999 is a prime.

It is a super-2 number, since 2×2143125001² = 9185969539822500002, which contains 22 as substring.

Together with 2143124999, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2143125001.

It is not a weakly prime, because it can be changed into another prime (2143125071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071562500 + 1071562501.

It is an arithmetic number, because the mean of its divisors is an integer number (1071562501).

Almost surely, 2^2143125001 is an apocalyptic number.

It is an amenable number.

2143125001 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143125001 is an equidigital number, since it uses as much as digits as its factorization.

2143125001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 2143125001 is about 46293.8980968335. The cubic root of 2143125001 is about 1289.2857053513.

Adding to 2143125001 its reverse (1005213412), we get a palindrome (3148338413).

The spelling of 2143125001 in words is "two billion, one hundred forty-three million, one hundred twenty-five thousand, one".