2100143021 has 2 divisors, whose sum is σ = 2100143022. Its totient is φ = 2100143020.

The previous prime is 2100142997. The next prime is 2100143027. The reversal of 2100143021 is 1203410012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1590015625 + 510127396 = 39875^2 + 22586^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2100143021 is a prime.

It is a super-4 number, since 4×2100143021⁴ (a number of 38 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2100142987 and 2100143005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2100143027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050071510 + 1050071511.

It is an arithmetic number, because the mean of its divisors is an integer number (1050071511).

Almost surely, 2^2100143021 is an apocalyptic number.

It is an amenable number.

2100143021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100143021 is an equidigital number, since it uses as much as digits as its factorization.

2100143021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2100143021 is about 45827.3174100339. The cubic root of 2100143021 is about 1280.6082357105.

Adding to 2100143021 its reverse (1203410012), we get a palindrome (3303553033).

The spelling of 2100143021 in words is "two billion, one hundred million, one hundred forty-three thousand, twenty-one".