212899273 has 2 divisors, whose sum is σ = 212899274. Its totient is φ = 212899272.

The previous prime is 212899261. The next prime is 212899283. The reversal of 212899273 is 372998212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202863049 + 10036224 = 14243^2 + 3168^2 .

It is a cyclic number.

It is not a de Polignac number, because 212899273 - 2⁵ = 212899241 is a prime.

It is a super-2 number, since 2×212899273² = 90652200887857058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212899223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106449636 + 106449637.

It is an arithmetic number, because the mean of its divisors is an integer number (106449637).

Almost surely, 2^212899273 is an apocalyptic number.

It is an amenable number.

212899273 is a deficient number, since it is larger than the sum of its proper divisors (1).

212899273 is an equidigital number, since it uses as much as digits as its factorization.

212899273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 43.

The square root of 212899273 is about 14591.0682610973. The cubic root of 212899273 is about 597.1151077069.

The spelling of 212899273 in words is "two hundred twelve million, eight hundred ninety-nine thousand, two hundred seventy-three".