211212210229 has 2 divisors, whose sum is σ = 211212210230. Its totient is φ = 211212210228.

The previous prime is 211212210113. The next prime is 211212210233. The reversal of 211212210229 is 922012212112.

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., 141515154225 + 69697056004 = 376185^2 + 264002^2 .

It is a cyclic number.

It is not a de Polignac number, because 211212210229 - 2²⁷ = 211077992501 is a prime.

It is a super-2 number, since 2×211212210229² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211212210239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105606105114 + 105606105115.

It is an arithmetic number, because the mean of its divisors is an integer number (105606105115).

Almost surely, 2^211212210229 is an apocalyptic number.

It is an amenable number.

211212210229 is a deficient number, since it is larger than the sum of its proper divisors (1).

211212210229 is an equidigital number, since it uses as much as digits as its factorization.

211212210229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 211212210229 in words is "two hundred eleven billion, two hundred twelve million, two hundred ten thousand, two hundred twenty-nine".