212311231101971 has 2 divisors, whose sum is σ = 212311231101972. Its totient is φ = 212311231101970.

The previous prime is 212311231101913. The next prime is 212311231102027. The reversal of 212311231101971 is 179101132113212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212311231101971 - 2²⁶ = 212311163993107 is a prime.

It is not a weakly prime, because it can be changed into another prime (212311231101371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106155615550985 + 106155615550986.

It is an arithmetic number, because the mean of its divisors is an integer number (106155615550986).

Almost surely, 2^{212311231101971} is an apocalyptic number.

212311231101971 is a deficient number, since it is larger than the sum of its proper divisors (1).

212311231101971 is an equidigital number, since it uses as much as digits as its factorization.

212311231101971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 35.

The spelling of 212311231101971 in words is "two hundred twelve trillion, three hundred eleven billion, two hundred thirty-one million, one hundred one thousand, nine hundred seventy-one".