212022269 has 2 divisors, whose sum is σ = 212022270. Its totient is φ = 212022268.

The previous prime is 212022263. The next prime is 212022281. The reversal of 212022269 is 962220212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194965369 + 17056900 = 13963^2 + 4130^2 .

It is a cyclic number.

It is not a de Polignac number, because 212022269 - 2²⁴ = 195245053 is a prime.

It is a super-2 number, since 2×212022269² = 89906885103816722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212022263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106011134 + 106011135.

It is an arithmetic number, because the mean of its divisors is an integer number (106011135).

Almost surely, 2^212022269 is an apocalyptic number.

It is an amenable number.

212022269 is a deficient number, since it is larger than the sum of its proper divisors (1).

212022269 is an equidigital number, since it uses as much as digits as its factorization.

212022269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 212022269 is about 14560.9844790797. The cubic root of 212022269 is about 596.2940730431.

It can be divided in two parts, 2120 and 22269, that added together give a cube (24389 = 29³).

The spelling of 212022269 in words is "two hundred twelve million, twenty-two thousand, two hundred sixty-nine".