201212012149 has 2 divisors, whose sum is σ = 201212012150. Its totient is φ = 201212012148.

The previous prime is 201212012147. The next prime is 201212012269. The reversal of 201212012149 is 941210212102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136018603249 + 65193408900 = 368807^2 + 255330^2 .

It is a cyclic number.

It is not a de Polignac number, because 201212012149 - 2¹ = 201212012147 is a prime.

Together with 201212012147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201212012147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100606006074 + 100606006075.

It is an arithmetic number, because the mean of its divisors is an integer number (100606006075).

Almost surely, 2^201212012149 is an apocalyptic number.

It is an amenable number.

201212012149 is a deficient number, since it is larger than the sum of its proper divisors (1).

201212012149 is an equidigital number, since it uses as much as digits as its factorization.

201212012149 is an evil number, because the sum of its binary digits is even.

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

The spelling of 201212012149 in words is "two hundred one billion, two hundred twelve million, twelve thousand, one hundred forty-nine".