212122297 has 2 divisors, whose sum is σ = 212122298. Its totient is φ = 212122296.

The previous prime is 212122249. The next prime is 212122373. The reversal of 212122297 is 792221212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208629136 + 3493161 = 14444^2 + 1869^2 .

It is a cyclic number.

It is not a de Polignac number, because 212122297 - 2¹⁵ = 212089529 is a prime.

It is not a weakly prime, because it can be changed into another prime (212122237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106061148 + 106061149.

It is an arithmetic number, because the mean of its divisors is an integer number (106061149).

Almost surely, 2^212122297 is an apocalyptic number.

It is an amenable number.

212122297 is a deficient number, since it is larger than the sum of its proper divisors (1).

212122297 is an equidigital number, since it uses as much as digits as its factorization.

212122297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 28.

The square root of 212122297 is about 14564.4188692855. The cubic root of 212122297 is about 596.3878316316.

The spelling of 212122297 in words is "two hundred twelve million, one hundred twenty-two thousand, two hundred ninety-seven".