21200210029 has 2 divisors, whose sum is σ = 21200210030. Its totient is φ = 21200210028.

The previous prime is 21200209993. The next prime is 21200210041. The reversal of 21200210029 is 92001200212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21162975625 + 37234404 = 145475^2 + 6102^2 .

It is a cyclic number.

It is not a de Polignac number, because 21200210029 - 2²⁹ = 20663339117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21200209988 and 21200210015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21200280029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600105014 + 10600105015.

It is an arithmetic number, because the mean of its divisors is an integer number (10600105015).

Almost surely, 2^21200210029 is an apocalyptic number.

It is an amenable number.

21200210029 is a deficient number, since it is larger than the sum of its proper divisors (1).

21200210029 is an equidigital number, since it uses as much as digits as its factorization.

21200210029 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 19.

The spelling of 21200210029 in words is "twenty-one billion, two hundred million, two hundred ten thousand, twenty-nine".