212012220149 has 2 divisors, whose sum is σ = 212012220150. Its totient is φ = 212012220148.

The previous prime is 212012220113. The next prime is 212012220151. The reversal of 212012220149 is 941022210212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148398300625 + 63613919524 = 385225^2 + 252218^2 .

It is a cyclic number.

It is not a de Polignac number, because 212012220149 - 2⁸ = 212012219893 is a prime.

Together with 212012220151, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212012220109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106006110074 + 106006110075.

It is an arithmetic number, because the mean of its divisors is an integer number (106006110075).

Almost surely, 2^212012220149 is an apocalyptic number.

It is an amenable number.

212012220149 is a deficient number, since it is larger than the sum of its proper divisors (1).

212012220149 is an equidigital number, since it uses as much as digits as its factorization.

212012220149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 212012220149 in words is "two hundred twelve billion, twelve million, two hundred twenty thousand, one hundred forty-nine".