212123055202237 has 2 divisors, whose sum is σ = 212123055202238. Its totient is φ = 212123055202236.

The previous prime is 212123055202231. The next prime is 212123055202273. The reversal of 212123055202237 is 732202550321212.

Together with next prime (212123055202273) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200055310216281 + 12067744985956 = 14144091^2 + 3473866^2 .

It is a cyclic number.

It is not a de Polignac number, because 212123055202237 - 2¹⁵ = 212123055169469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212123055202196 and 212123055202205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212123055202231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106061527601118 + 106061527601119.

It is an arithmetic number, because the mean of its divisors is an integer number (106061527601119).

Almost surely, 2^{212123055202237} is an apocalyptic number.

It is an amenable number.

212123055202237 is a deficient number, since it is larger than the sum of its proper divisors (1).

212123055202237 is an equidigital number, since it uses as much as digits as its factorization.

212123055202237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 37.

The spelling of 212123055202237 in words is "two hundred twelve trillion, one hundred twenty-three billion, fifty-five million, two hundred two thousand, two hundred thirty-seven".