212252269 has 2 divisors, whose sum is σ = 212252270. Its totient is φ = 212252268.

The previous prime is 212252267. The next prime is 212252281. The reversal of 212252269 is 962252212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204061225 + 8191044 = 14285^2 + 2862^2 .

It is a cyclic number.

It is not a de Polignac number, because 212252269 - 2¹ = 212252267 is a prime.

It is a super-2 number, since 2×212252269² = 90102051391296722, which contains 22 as substring.

Together with 212252267, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 212252269.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212252267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106126134 + 106126135.

It is an arithmetic number, because the mean of its divisors is an integer number (106126135).

Almost surely, 2^212252269 is an apocalyptic number.

It is an amenable number.

212252269 is a deficient number, since it is larger than the sum of its proper divisors (1).

212252269 is an equidigital number, since it uses as much as digits as its factorization.

212252269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The square root of 212252269 is about 14568.8801560038. The cubic root of 212252269 is about 596.5096134123.

It can be divided in two parts, 212252 and 269, that added together give a square (212521 = 461²).

The spelling of 212252269 in words is "two hundred twelve million, two hundred fifty-two thousand, two hundred sixty-nine".