212064169 has 2 divisors, whose sum is σ = 212064170. Its totient is φ = 212064168.

The previous prime is 212064143. The next prime is 212064199. The reversal of 212064169 is 961460212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184606569 + 27457600 = 13587^2 + 5240^2 .

It is a cyclic number.

It is not a de Polignac number, because 212064169 - 2¹⁵ = 212031401 is a prime.

It is a super-2 number, since 2×212064169² = 89942423547321122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212064169.

It is not a weakly prime, because it can be changed into another prime (212064109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106032084 + 106032085.

It is an arithmetic number, because the mean of its divisors is an integer number (106032085).

Almost surely, 2^212064169 is an apocalyptic number.

It is an amenable number.

212064169 is a deficient number, since it is larger than the sum of its proper divisors (1).

212064169 is an equidigital number, since it uses as much as digits as its factorization.

212064169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 212064169 is about 14562.4231843468. The cubic root of 212064169 is about 596.3333504833. Note that the first 4 decimals are identical.

The spelling of 212064169 in words is "two hundred twelve million, sixty-four thousand, one hundred sixty-nine".