212199934979 has 2 divisors, whose sum is σ = 212199934980. Its totient is φ = 212199934978.

The previous prime is 212199934957. The next prime is 212199934981. The reversal of 212199934979 is 979439991212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212199934979 - 2¹² = 212199930883 is a prime.

It is a super-3 number, since 3×212199934979³ (a number of 35 digits) contains 333 as substring.

Together with 212199934981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212199934939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106099967489 + 106099967490.

It is an arithmetic number, because the mean of its divisors is an integer number (106099967490).

Almost surely, 2^212199934979 is an apocalyptic number.

212199934979 is a deficient number, since it is larger than the sum of its proper divisors (1).

212199934979 is an equidigital number, since it uses as much as digits as its factorization.

212199934979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19840464, while the sum is 65.

The spelling of 212199934979 in words is "two hundred twelve billion, one hundred ninety-nine million, nine hundred thirty-four thousand, nine hundred seventy-nine".