212122049 has 2 divisors, whose sum is σ = 212122050. Its totient is φ = 212122048.

The previous prime is 212122019. The next prime is 212122063. The reversal of 212122049 is 940221212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205062400 + 7059649 = 14320^2 + 2657^2 .

It is a cyclic number.

It is not a de Polignac number, because 212122049 - 2¹² = 212117953 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212122019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106061024 + 106061025.

It is an arithmetic number, because the mean of its divisors is an integer number (106061025).

Almost surely, 2^212122049 is an apocalyptic number.

It is an amenable number.

212122049 is a deficient number, since it is larger than the sum of its proper divisors (1).

212122049 is an equidigital number, since it uses as much as digits as its factorization.

212122049 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 23.

The square root of 212122049 is about 14564.4103553834. The cubic root of 212122049 is about 596.3875992118.

The spelling of 212122049 in words is "two hundred twelve million, one hundred twenty-two thousand, forty-nine".