212774269 has 2 divisors, whose sum is σ = 212774270. Its totient is φ = 212774268.

The previous prime is 212774249. The next prime is 212774273. The reversal of 212774269 is 962477212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119902500 + 92871769 = 10950^2 + 9637^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212774269 is a prime.

It is a super-2 number, since 2×212774269² = 90545779096968722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212774249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106387134 + 106387135.

It is an arithmetic number, because the mean of its divisors is an integer number (106387135).

Almost surely, 2^212774269 is an apocalyptic number.

It is an amenable number.

212774269 is a deficient number, since it is larger than the sum of its proper divisors (1).

212774269 is an equidigital number, since it uses as much as digits as its factorization.

212774269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 40.

The square root of 212774269 is about 14586.7840526965. The cubic root of 212774269 is about 596.9982192690.

The spelling of 212774269 in words is "two hundred twelve million, seven hundred seventy-four thousand, two hundred sixty-nine".