212146422179 has 2 divisors, whose sum is σ = 212146422180. Its totient is φ = 212146422178.

The previous prime is 212146422133. The next prime is 212146422193. The reversal of 212146422179 is 971224641212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212146422179 is a prime.

It is a super-2 number, since 2×212146422179² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (212146422079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106073211089 + 106073211090.

It is an arithmetic number, because the mean of its divisors is an integer number (106073211090).

Almost surely, 2^212146422179 is an apocalyptic number.

212146422179 is a deficient number, since it is larger than the sum of its proper divisors (1).

212146422179 is an equidigital number, since it uses as much as digits as its factorization.

212146422179 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 41.

The spelling of 212146422179 in words is "two hundred twelve billion, one hundred forty-six million, four hundred twenty-two thousand, one hundred seventy-nine".