21211010020229 has 2 divisors, whose sum is σ = 21211010020230. Its totient is φ = 21211010020228.

The previous prime is 21211010020181. The next prime is 21211010020247. The reversal of 21211010020229 is 92202001011212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21206006580004 + 5003440225 = 4604998^2 + 70735^2 .

It is a cyclic number.

It is not a de Polignac number, because 21211010020229 - 2⁸ = 21211010019973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21211010520229) 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, 10605505010114 + 10605505010115.

It is an arithmetic number, because the mean of its divisors is an integer number (10605505010115).

Almost surely, 2^{21211010020229} is an apocalyptic number.

It is an amenable number.

21211010020229 is a deficient number, since it is larger than the sum of its proper divisors (1).

21211010020229 is an equidigital number, since it uses as much as digits as its factorization.

21211010020229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 21211010020229 in words is "twenty-one trillion, two hundred eleven billion, ten million, twenty thousand, two hundred twenty-nine".