21202310029 has 2 divisors, whose sum is σ = 21202310030. Its totient is φ = 21202310028.

The previous prime is 21202309967. The next prime is 21202310047. The reversal of 21202310029 is 92001320212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11512860804 + 9689449225 = 107298^2 + 98435^2 .

It is a cyclic number.

It is not a de Polignac number, because 21202310029 - 2⁹ = 21202309517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21202309991 and 21202310009.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21202310099) 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, 10601155014 + 10601155015.

It is an arithmetic number, because the mean of its divisors is an integer number (10601155015).

Almost surely, 2^21202310029 is an apocalyptic number.

It is an amenable number.

21202310029 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202310029 is an equidigital number, since it uses as much as digits as its factorization.

21202310029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The spelling of 21202310029 in words is "twenty-one billion, two hundred two million, three hundred ten thousand, twenty-nine".