21022002143 has 2 divisors, whose sum is σ = 21022002144. Its totient is φ = 21022002142.

The previous prime is 21022002109. The next prime is 21022002149. The reversal of 21022002143 is 34120022012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21022002143 - 2⁸ = 21022001887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21022002149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511001071 + 10511001072.

It is an arithmetic number, because the mean of its divisors is an integer number (10511001072).

Almost surely, 2^21022002143 is an apocalyptic number.

21022002143 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022002143 is an equidigital number, since it uses as much as digits as its factorization.

21022002143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 21022002143 its reverse (34120022012), we get a palindrome (55142024155).

The spelling of 21022002143 in words is "twenty-one billion, twenty-two million, two thousand, one hundred forty-three".