21101300029 has 2 divisors, whose sum is σ = 21101300030. Its totient is φ = 21101300028.

The previous prime is 21101300009. The next prime is 21101300047. The reversal of 21101300029 is 92000310112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19010067129 + 2091232900 = 137877^2 + 45730^2 .

It is a cyclic number.

It is not a de Polignac number, because 21101300029 - 2¹¹ = 21101297981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21101299979 and 21101300015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21101300009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550650014 + 10550650015.

It is an arithmetic number, because the mean of its divisors is an integer number (10550650015).

Almost surely, 2^21101300029 is an apocalyptic number.

It is an amenable number.

21101300029 is a deficient number, since it is larger than the sum of its proper divisors (1).

21101300029 is an equidigital number, since it uses as much as digits as its factorization.

21101300029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

The spelling of 21101300029 in words is "twenty-one billion, one hundred one million, three hundred thousand, twenty-nine".