121755722702 has 16 divisors (see below), whose sum is σ = 190584025632. Its totient is φ = 58227987840.

The previous prime is 121755722687. The next prime is 121755722719. The reversal of 121755722702 is 207227557121.

It is a self number, because there is not a number n which added to its sum of digits gives 121755722702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1016018 + ... + 1129514.

It is an arithmetic number, because the mean of its divisors is an integer number (11911501602).

Almost surely, 2^121755722702 is an apocalyptic number.

121755722702 is a deficient number, since it is larger than the sum of its proper divisors (68828302930).

121755722702 is a wasteful number, since it uses less digits than its factorization.

121755722702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136843.

The product of its (nonzero) digits is 137200, while the sum is 41.

The spelling of 121755722702 in words is "one hundred twenty-one billion, seven hundred fifty-five million, seven hundred twenty-two thousand, seven hundred two".