21101001000229 has 2 divisors, whose sum is σ = 21101001000230. Its totient is φ = 21101001000228.

The previous prime is 21101001000197. The next prime is 21101001000239. The reversal of 21101001000229 is 92200010010112.

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., 21017594405025 + 83406595204 = 4584495^2 + 288802^2 .

It is a cyclic number.

It is not a de Polignac number, because 21101001000229 - 2⁵ = 21101001000197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21101001000239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550500500114 + 10550500500115.

It is an arithmetic number, because the mean of its divisors is an integer number (10550500500115).

Almost surely, 2^{21101001000229} is an apocalyptic number.

It is an amenable number.

21101001000229 is a deficient number, since it is larger than the sum of its proper divisors (1).

21101001000229 is an equidigital number, since it uses as much as digits as its factorization.

21101001000229 is an evil number, because the sum of its binary digits is even.

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

The spelling of 21101001000229 in words is "twenty-one trillion, one hundred one billion, one million, two hundred twenty-nine", and thus it is an aban number.