212011122149 has 2 divisors, whose sum is σ = 212011122150. Its totient is φ = 212011122148.

The previous prime is 212011122101. The next prime is 212011122181. The reversal of 212011122149 is 941221110212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207737231524 + 4273890625 = 455782^2 + 65375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212011122149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212011122049) 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, 106005561074 + 106005561075.

It is an arithmetic number, because the mean of its divisors is an integer number (106005561075).

Almost surely, 2^212011122149 is an apocalyptic number.

It is an amenable number.

212011122149 is a deficient number, since it is larger than the sum of its proper divisors (1).

212011122149 is an equidigital number, since it uses as much as digits as its factorization.

212011122149 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 26.

The spelling of 212011122149 in words is "two hundred twelve billion, eleven million, one hundred twenty-two thousand, one hundred forty-nine".