6991203138122 has 16 divisors (see below), whose sum is σ = 11986921632960. Its totient is φ = 2995729424448.

The previous prime is 6991203138121. The next prime is 6991203138163. The reversal of 6991203138122 is 2218313021996.

It is not an unprimeable number, because it can be changed into a prime (6991203138121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41620847 + ... + 41788482.

It is an arithmetic number, because the mean of its divisors is an integer number (749182602060).

Almost surely, 2^{6991203138122} is an apocalyptic number.

6991203138122 is a deficient number, since it is larger than the sum of its proper divisors (4995718494838).

6991203138122 is a wasteful number, since it uses less digits than its factorization.

6991203138122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83415325.

The product of its (nonzero) digits is 279936, while the sum is 47.

The spelling of 6991203138122 in words is "six trillion, nine hundred ninety-one billion, two hundred three million, one hundred thirty-eight thousand, one hundred twenty-two".