21010302143 has 2 divisors, whose sum is σ = 21010302144. Its totient is φ = 21010302142.

The previous prime is 21010302097. The next prime is 21010302151. The reversal of 21010302143 is 34120301012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21010302143 - 2²⁸ = 20741866687 is a prime.

It is a super-2 number, since 2×21010302143² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21010332143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505151071 + 10505151072.

It is an arithmetic number, because the mean of its divisors is an integer number (10505151072).

Almost surely, 2^21010302143 is an apocalyptic number.

21010302143 is a deficient number, since it is larger than the sum of its proper divisors (1).

21010302143 is an equidigital number, since it uses as much as digits as its factorization.

21010302143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21010302143 its reverse (34120301012), we get a palindrome (55130603155).

The spelling of 21010302143 in words is "twenty-one billion, ten million, three hundred two thousand, one hundred forty-three".