21010001100029 has 2 divisors, whose sum is σ = 21010001100030. Its totient is φ = 21010001100028.

The previous prime is 21010001100017. The next prime is 21010001100071. The reversal of 21010001100029 is 92000110001012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11826707244004 + 9183293856025 = 3438998^2 + 3030395^2 .

It is a cyclic number.

It is not a de Polignac number, because 21010001100029 - 2²⁴ = 21009984322813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21010001108029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505000550014 + 10505000550015.

It is an arithmetic number, because the mean of its divisors is an integer number (10505000550015).

Almost surely, 2^{21010001100029} is an apocalyptic number.

It is an amenable number.

21010001100029 is a deficient number, since it is larger than the sum of its proper divisors (1).

21010001100029 is an equidigital number, since it uses as much as digits as its factorization.

21010001100029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 21010001100029 in words is "twenty-one trillion, ten billion, one million, one hundred thousand, twenty-nine".