211210111022137 has 2 divisors, whose sum is σ = 211210111022138. Its totient is φ = 211210111022136.

The previous prime is 211210111022051. The next prime is 211210111022143. The reversal of 211210111022137 is 731220111012112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115609353248041 + 95600757774096 = 10752179^2 + 9777564^2 .

It is a cyclic number.

It is not a de Polignac number, because 211210111022137 - 2³¹ = 211207963538489 is a prime.

It is not a weakly prime, because it can be changed into another prime (211210111022167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105605055511068 + 105605055511069.

It is an arithmetic number, because the mean of its divisors is an integer number (105605055511069).

Almost surely, 2^{211210111022137} is an apocalyptic number.

It is an amenable number.

211210111022137 is a deficient number, since it is larger than the sum of its proper divisors (1).

211210111022137 is an equidigital number, since it uses as much as digits as its factorization.

211210111022137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 25.

Adding to 211210111022137 its reverse (731220111012112), we get a palindrome (942430222034249).

The spelling of 211210111022137 in words is "two hundred eleven trillion, two hundred ten billion, one hundred eleven million, twenty-two thousand, one hundred thirty-seven".