21167061202069 has 2 divisors, whose sum is σ = 21167061202070. Its totient is φ = 21167061202068.

The previous prime is 21167061202013. The next prime is 21167061202103. The reversal of 21167061202069 is 96020216076112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14532640108900 + 6634421093169 = 3812170^2 + 2575737^2 .

It is a cyclic number.

It is not a de Polignac number, because 21167061202069 - 2²⁹ = 21166524331157 is a prime.

It is a super-2 number, since 2×21167061202069² (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 (21167065202069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10583530601034 + 10583530601035.

It is an arithmetic number, because the mean of its divisors is an integer number (10583530601035).

Almost surely, 2^{21167061202069} is an apocalyptic number.

It is an amenable number.

21167061202069 is a deficient number, since it is larger than the sum of its proper divisors (1).

21167061202069 is an equidigital number, since it uses as much as digits as its factorization.

21167061202069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 21167061202069 in words is "twenty-one trillion, one hundred sixty-seven billion, sixty-one million, two hundred two thousand, sixty-nine".