211020120112117 has 2 divisors, whose sum is σ = 211020120112118. Its totient is φ = 211020120112116.

The previous prime is 211020120112007. The next prime is 211020120112121. The reversal of 211020120112117 is 711211021020112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210687576436561 + 332543675556 = 14515081^2 + 576666^2 .

It is a cyclic number.

It is not a de Polignac number, because 211020120112117 - 2⁷ = 211020120111989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211020120112177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105510060056058 + 105510060056059.

It is an arithmetic number, because the mean of its divisors is an integer number (105510060056059).

Almost surely, 2^{211020120112117} is an apocalyptic number.

It is an amenable number.

211020120112117 is a deficient number, since it is larger than the sum of its proper divisors (1).

211020120112117 is an equidigital number, since it uses as much as digits as its factorization.

211020120112117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 22.

Adding to 211020120112117 its reverse (711211021020112), we get a palindrome (922231141132229).

The spelling of 211020120112117 in words is "two hundred eleven trillion, twenty billion, one hundred twenty million, one hundred twelve thousand, one hundred seventeen".