121755370102 has 16 divisors (see below), whose sum is σ = 192495482640. Its totient is φ = 57669425632.

The previous prime is 121755370069. The next prime is 121755370103. The reversal of 121755370102 is 201073557121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121755370103) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 19800988 + ... + 19807135.

It is an arithmetic number, because the mean of its divisors is an integer number (12030967665).

Almost surely, 2^121755370102 is an apocalyptic number.

121755370102 is a deficient number, since it is larger than the sum of its proper divisors (70740112538).

121755370102 is a wasteful number, since it uses less digits than its factorization.

121755370102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39608207.

The product of its (nonzero) digits is 14700, while the sum is 34.

The spelling of 121755370102 in words is "one hundred twenty-one billion, seven hundred fifty-five million, three hundred seventy thousand, one hundred two".