21101121002029 has 2 divisors, whose sum is σ = 21101121002030. Its totient is φ = 21101121002028.

The previous prime is 21101121002023. The next prime is 21101121002123. The reversal of 21101121002029 is 92020012110112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14456078473225 + 6645042528804 = 3802115^2 + 2577798^2 .

It is a cyclic number.

It is not a de Polignac number, because 21101121002029 - 2⁹ = 21101121001517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21101121002023) 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, 10550560501014 + 10550560501015.

It is an arithmetic number, because the mean of its divisors is an integer number (10550560501015).

Almost surely, 2^{21101121002029} is an apocalyptic number.

It is an amenable number.

21101121002029 is a deficient number, since it is larger than the sum of its proper divisors (1).

21101121002029 is an equidigital number, since it uses as much as digits as its factorization.

21101121002029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 21101121002029 in words is "twenty-one trillion, one hundred one billion, one hundred twenty-one million, two thousand, twenty-nine".