2212709 has 2 divisors, whose sum is σ = 2212710. Its totient is φ = 2212708.

The previous prime is 2212699. The next prime is 2212723. The reversal of 2212709 is 9072122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1162084 + 1050625 = 1078^2 + 1025^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212709 - 2⁸ = 2212453 is a prime.

It is a super-2 number, since 2×2212709² = 9792162237362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2212009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106354 + 1106355.

It is an arithmetic number, because the mean of its divisors is an integer number (1106355).

2^2212709 is an apocalyptic number.

It is an amenable number.

2212709 is a deficient number, since it is larger than the sum of its proper divisors (1).

2212709 is an equidigital number, since it uses as much as digits as its factorization.

2212709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 2212709 is about 1487.5177309868. The cubic root of 2212709 is about 130.3091066502.

The spelling of 2212709 in words is "two million, two hundred twelve thousand, seven hundred nine".