121911703166 has 32 divisors (see below), whose sum is σ = 207966099456. Its totient is φ = 53095860000.

The previous prime is 121911703129. The next prime is 121911703181. The reversal of 121911703166 is 661307119121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 816050 + ... + 953813.

It is an arithmetic number, because the mean of its divisors is an integer number (6498940608).

Almost surely, 2^121911703166 is an apocalyptic number.

121911703166 is a deficient number, since it is larger than the sum of its proper divisors (86054396290).

121911703166 is a wasteful number, since it uses less digits than its factorization.

121911703166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770008.

The product of its (nonzero) digits is 13608, while the sum is 38.

The spelling of 121911703166 in words is "one hundred twenty-one billion, nine hundred eleven million, seven hundred three thousand, one hundred sixty-six".