212104425277 has 2 divisors, whose sum is σ = 212104425278. Its totient is φ = 212104425276.

The previous prime is 212104425251. The next prime is 212104425341. The reversal of 212104425277 is 772524401212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209270566521 + 2833858756 = 457461^2 + 53234^2 .

It is a cyclic number.

It is not a de Polignac number, because 212104425277 - 2⁷ = 212104425149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212104425977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106052212638 + 106052212639.

It is an arithmetic number, because the mean of its divisors is an integer number (106052212639).

Almost surely, 2^212104425277 is an apocalyptic number.

It is an amenable number.

212104425277 is a deficient number, since it is larger than the sum of its proper divisors (1).

212104425277 is an equidigital number, since it uses as much as digits as its factorization.

212104425277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62720, while the sum is 37.

Adding to 212104425277 its reverse (772524401212), we get a palindrome (984628826489).

The spelling of 212104425277 in words is "two hundred twelve billion, one hundred four million, four hundred twenty-five thousand, two hundred seventy-seven".