212247247704229 has 2 divisors, whose sum is σ = 212247247704230. Its totient is φ = 212247247704228.

The previous prime is 212247247704227. The next prime is 212247247704253. The reversal of 212247247704229 is 922407742742212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136203441208129 + 76043806496100 = 11670623^2 + 8720310^2 .

It is a cyclic number.

It is not a de Polignac number, because 212247247704229 - 2¹ = 212247247704227 is a prime.

It is a super-2 number, since 2×212247247704229² (a number of 29 digits) contains 22 as substring.

Together with 212247247704227, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 212247247704229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212247247704227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106123623852114 + 106123623852115.

It is an arithmetic number, because the mean of its divisors is an integer number (106123623852115).

Almost surely, 2^{212247247704229} is an apocalyptic number.

It is an amenable number.

212247247704229 is a deficient number, since it is larger than the sum of its proper divisors (1).

212247247704229 is an equidigital number, since it uses as much as digits as its factorization.

212247247704229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12644352, while the sum is 55.

The spelling of 212247247704229 in words is "two hundred twelve trillion, two hundred forty-seven billion, two hundred forty-seven million, seven hundred four thousand, two hundred twenty-nine".