21201210102211 has 2 divisors, whose sum is σ = 21201210102212. Its totient is φ = 21201210102210.

The previous prime is 21201210102203. The next prime is 21201210102227. The reversal of 21201210102211 is 11220101210212.

It is an a-pointer prime, because the next prime (21201210102227) can be obtained adding 21201210102211 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21201210102211 - 2³ = 21201210102203 is a prime.

It is a super-2 number, since 2×21201210102211² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21201210102311) 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, 10600605051105 + 10600605051106.

It is an arithmetic number, because the mean of its divisors is an integer number (10600605051106).

Almost surely, 2^{21201210102211} is an apocalyptic number.

21201210102211 is a deficient number, since it is larger than the sum of its proper divisors (1).

21201210102211 is an equidigital number, since it uses as much as digits as its factorization.

21201210102211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21201210102211 its reverse (11220101210212), we get a palindrome (32421311312423).

The spelling of 21201210102211 in words is "twenty-one trillion, two hundred one billion, two hundred ten million, one hundred two thousand, two hundred eleven".