211212263 has 2 divisors, whose sum is σ = 211212264. Its totient is φ = 211212262.

The previous prime is 211212247. The next prime is 211212283. The reversal of 211212263 is 362212112.

It is an a-pointer prime, because the next prime (211212283) can be obtained adding 211212263 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211212263 - 2⁴ = 211212247 is a prime.

It is a super-2 number, since 2×211212263² = 89221240083162338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211212203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105606131 + 105606132.

It is an arithmetic number, because the mean of its divisors is an integer number (105606132).

Almost surely, 2^211212263 is an apocalyptic number.

211212263 is a deficient number, since it is larger than the sum of its proper divisors (1).

211212263 is an equidigital number, since it uses as much as digits as its factorization.

211212263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 20.

The square root of 211212263 is about 14533.1436035016. The cubic root of 211212263 is about 595.5337469828.

Adding to 211212263 its reverse (362212112), we get a palindrome (573424375).

The spelling of 211212263 in words is "two hundred eleven million, two hundred twelve thousand, two hundred sixty-three".