21200211011069 has 2 divisors, whose sum is σ = 21200211011070. Its totient is φ = 21200211011068.

The previous prime is 21200211011059. The next prime is 21200211011129. The reversal of 21200211011069 is 96011011200212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17662098916900 + 3538112094169 = 4202630^2 + 1880987^2 .

It is a cyclic number.

It is not a de Polignac number, because 21200211011069 - 2⁴ = 21200211011053 is a prime.

It is a super-2 number, since 2×21200211011069² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21200211011059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600105505534 + 10600105505535.

It is an arithmetic number, because the mean of its divisors is an integer number (10600105505535).

Almost surely, 2^{21200211011069} is an apocalyptic number.

It is an amenable number.

21200211011069 is a deficient number, since it is larger than the sum of its proper divisors (1).

21200211011069 is an equidigital number, since it uses as much as digits as its factorization.

21200211011069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 26.

The spelling of 21200211011069 in words is "twenty-one trillion, two hundred billion, two hundred eleven million, eleven thousand, sixty-nine".