21202000221029 has 2 divisors, whose sum is σ = 21202000221030. Its totient is φ = 21202000221028.

The previous prime is 21202000220993. The next prime is 21202000221043. The reversal of 21202000221029 is 92012200020212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19711806280804 + 1490193940225 = 4439798^2 + 1220735^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21202000221029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21202000220995 and 21202000221013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21202000221529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601000110514 + 10601000110515.

It is an arithmetic number, because the mean of its divisors is an integer number (10601000110515).

Almost surely, 2^{21202000221029} is an apocalyptic number.

It is an amenable number.

21202000221029 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202000221029 is an equidigital number, since it uses as much as digits as its factorization.

21202000221029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The spelling of 21202000221029 in words is "twenty-one trillion, two hundred two billion, two hundred twenty-one thousand, twenty-nine".