212010222209 has 2 divisors, whose sum is σ = 212010222210. Its totient is φ = 212010222208.

The previous prime is 212010222167. The next prime is 212010222239. The reversal of 212010222209 is 902222010212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134894598400 + 77115623809 = 367280^2 + 277697^2 .

It is a cyclic number.

It is not a de Polignac number, because 212010222209 - 2⁸ = 212010221953 is a prime.

It is a super-2 number, since 2×212010222209² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212010222239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106005111104 + 106005111105.

It is an arithmetic number, because the mean of its divisors is an integer number (106005111105).

Almost surely, 2^212010222209 is an apocalyptic number.

It is an amenable number.

212010222209 is a deficient number, since it is larger than the sum of its proper divisors (1).

212010222209 is an equidigital number, since it uses as much as digits as its factorization.

212010222209 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 23.

The spelling of 212010222209 in words is "two hundred twelve billion, ten million, two hundred twenty-two thousand, two hundred nine".