21202332006829 has 2 divisors, whose sum is σ = 21202332006830. Its totient is φ = 21202332006828.

The previous prime is 21202332006767. The next prime is 21202332006857. The reversal of 21202332006829 is 92860023320212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10984253062500 + 10218078944329 = 3314250^2 + 3196573^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21202332006829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21202332006791 and 21202332006800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21202332006329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601166003414 + 10601166003415.

It is an arithmetic number, because the mean of its divisors is an integer number (10601166003415).

Almost surely, 2^{21202332006829} is an apocalyptic number.

It is an amenable number.

21202332006829 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202332006829 is an equidigital number, since it uses as much as digits as its factorization.

21202332006829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 40.

The spelling of 21202332006829 in words is "twenty-one trillion, two hundred two billion, three hundred thirty-two million, six thousand, eight hundred twenty-nine".