212301202121209 has 2 divisors, whose sum is σ = 212301202121210. Its totient is φ = 212301202121208.

The previous prime is 212301202121191. The next prime is 212301202121213. The reversal of 212301202121209 is 902121202103212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211222622250000 + 1078579871209 = 14533500^2 + 1038547^2 .

It is a cyclic number.

It is not a de Polignac number, because 212301202121209 - 2⁷ = 212301202121081 is a prime.

It is a super-2 number, since 2×212301202121209² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212301202128209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106150601060604 + 106150601060605.

It is an arithmetic number, because the mean of its divisors is an integer number (106150601060605).

Almost surely, 2^{212301202121209} is an apocalyptic number.

It is an amenable number.

212301202121209 is a deficient number, since it is larger than the sum of its proper divisors (1).

212301202121209 is an equidigital number, since it uses as much as digits as its factorization.

212301202121209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 212301202121209 in words is "two hundred twelve trillion, three hundred one billion, two hundred two million, one hundred twenty-one thousand, two hundred nine".