212091171983 has 2 divisors, whose sum is σ = 212091171984. Its totient is φ = 212091171982.

The previous prime is 212091171953. The next prime is 212091171989. The reversal of 212091171983 is 389171190212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212091171983 - 2⁸ = 212091171727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212091171989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106045585991 + 106045585992.

It is an arithmetic number, because the mean of its divisors is an integer number (106045585992).

Almost surely, 2^212091171983 is an apocalyptic number.

212091171983 is a deficient number, since it is larger than the sum of its proper divisors (1).

212091171983 is an equidigital number, since it uses as much as digits as its factorization.

212091171983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 44.

The spelling of 212091171983 in words is "two hundred twelve billion, ninety-one million, one hundred seventy-one thousand, nine hundred eighty-three".