212130038971 has 2 divisors, whose sum is σ = 212130038972. Its totient is φ = 212130038970.

The previous prime is 212130038969. The next prime is 212130038977. The reversal of 212130038971 is 179830031212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212130038971 - 2¹ = 212130038969 is a prime.

Together with 212130038969, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 212130038971.

It is not a weakly prime, because it can be changed into another prime (212130038977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106065019485 + 106065019486.

It is an arithmetic number, because the mean of its divisors is an integer number (106065019486).

Almost surely, 2^212130038971 is an apocalyptic number.

212130038971 is a deficient number, since it is larger than the sum of its proper divisors (1).

212130038971 is an equidigital number, since it uses as much as digits as its factorization.

212130038971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 37.

The spelling of 212130038971 in words is "two hundred twelve billion, one hundred thirty million, thirty-eight thousand, nine hundred seventy-one".