212112111112277 has 2 divisors, whose sum is σ = 212112111112278. Its totient is φ = 212112111112276.

The previous prime is 212112111112207. The next prime is 212112111112309. The reversal of 212112111112277 is 772211111211212.

It is an a-pointer prime, because the next prime (212112111112309) can be obtained adding 212112111112277 to its sum of digits (32).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183126959418481 + 28985151693796 = 13532441^2 + 5383786^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212112111112277 is a prime.

It is a super-2 number, since 2×212112111112277² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212112111112207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106056055556138 + 106056055556139.

It is an arithmetic number, because the mean of its divisors is an integer number (106056055556139).

Almost surely, 2^{212112111112277} is an apocalyptic number.

It is an amenable number.

212112111112277 is a deficient number, since it is larger than the sum of its proper divisors (1).

212112111112277 is an equidigital number, since it uses as much as digits as its factorization.

212112111112277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1568, while the sum is 32.

Adding to 212112111112277 its reverse (772211111211212), we get a palindrome (984323222323489).

The spelling of 212112111112277 in words is "two hundred twelve trillion, one hundred twelve billion, one hundred eleven million, one hundred twelve thousand, two hundred seventy-seven".