213112108117061 has 2 divisors, whose sum is σ = 213112108117062. Its totient is φ = 213112108117060.

The previous prime is 213112108117049. The next prime is 213112108117067. The reversal of 213112108117061 is 160711801211312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116679099276100 + 96433008840961 = 10801810^2 + 9820031^2 .

It is a cyclic number.

It is not a de Polignac number, because 213112108117061 - 2⁶ = 213112108116997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213112108117067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106556054058530 + 106556054058531.

It is an arithmetic number, because the mean of its divisors is an integer number (106556054058531).

Almost surely, 2^{213112108117061} is an apocalyptic number.

It is an amenable number.

213112108117061 is a deficient number, since it is larger than the sum of its proper divisors (1).

213112108117061 is an equidigital number, since it uses as much as digits as its factorization.

213112108117061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 35.

Adding to 213112108117061 its reverse (160711801211312), we get a palindrome (373823909328373).

The spelling of 213112108117061 in words is "two hundred thirteen trillion, one hundred twelve billion, one hundred eight million, one hundred seventeen thousand, sixty-one".