21111002000029 has 2 divisors, whose sum is σ = 21111002000030. Its totient is φ = 21111002000028.

The previous prime is 21111001999891. The next prime is 21111002000041. The reversal of 21111002000029 is 92000020011112.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17463188494404 + 3647813505625 = 4178898^2 + 1909925^2 .

It is a cyclic number.

It is not a de Polignac number, because 21111002000029 - 2²⁵ = 21110968445597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21111002000129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555501000014 + 10555501000015.

It is an arithmetic number, because the mean of its divisors is an integer number (10555501000015).

Almost surely, 2^{21111002000029} is an apocalyptic number.

It is an amenable number.

21111002000029 is a deficient number, since it is larger than the sum of its proper divisors (1).

21111002000029 is an equidigital number, since it uses as much as digits as its factorization.

21111002000029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 21111002000029 in words is "twenty-one trillion, one hundred eleven billion, two million, twenty-nine", and thus it is an aban number.