212804269 has 2 divisors, whose sum is σ = 212804270. Its totient is φ = 212804268.

The previous prime is 212804239. The next prime is 212804321. The reversal of 212804269 is 962408212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148596100 + 64208169 = 12190^2 + 8013^2 .

It is a cyclic number.

It is not a de Polignac number, because 212804269 - 2¹⁹ = 212279981 is a prime.

It is a super-2 number, since 2×212804269² = 90571313809248722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212804239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106402134 + 106402135.

It is an arithmetic number, because the mean of its divisors is an integer number (106402135).

Almost surely, 2^212804269 is an apocalyptic number.

It is an amenable number.

212804269 is a deficient number, since it is larger than the sum of its proper divisors (1).

212804269 is an equidigital number, since it uses as much as digits as its factorization.

212804269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 212804269 is about 14587.8123445567. The cubic root of 212804269 is about 597.0262757707.

The spelling of 212804269 in words is "two hundred twelve million, eight hundred four thousand, two hundred sixty-nine".