121755743102 has 64 divisors (see below), whose sum is σ = 213183774720. Its totient is φ = 51079238496.

The previous prime is 121755743093. The next prime is 121755743143. The reversal of 121755743102 is 201347557121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 108419513 + ... + 108420635.

It is an arithmetic number, because the mean of its divisors is an integer number (3330996480).

Almost surely, 2^121755743102 is an apocalyptic number.

121755743102 is a deficient number, since it is larger than the sum of its proper divisors (91428031618).

121755743102 is a wasteful number, since it uses less digits than its factorization.

121755743102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1965.

The product of its (nonzero) digits is 58800, while the sum is 38.

The spelling of 121755743102 in words is "one hundred twenty-one billion, seven hundred fifty-five million, seven hundred forty-three thousand, one hundred two".