211352969 has 2 divisors, whose sum is σ = 211352970. Its totient is φ = 211352968.

The previous prime is 211352963. The next prime is 211352989. The reversal of 211352969 is 969253112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148547344 + 62805625 = 12188^2 + 7925^2 .

It is a cyclic number.

It is not a de Polignac number, because 211352969 - 2¹² = 211348873 is a prime.

It is a super-2 number, since 2×211352969² = 89340155010229922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (211352963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105676484 + 105676485.

It is an arithmetic number, because the mean of its divisors is an integer number (105676485).

Almost surely, 2^211352969 is an apocalyptic number.

It is an amenable number.

211352969 is a deficient number, since it is larger than the sum of its proper divisors (1).

211352969 is an equidigital number, since it uses as much as digits as its factorization.

211352969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 38.

The square root of 211352969 is about 14537.9836634934. The cubic root of 211352969 is about 595.6659624287.

The spelling of 211352969 in words is "two hundred eleven million, three hundred fifty-two thousand, nine hundred sixty-nine".