121678752292 has 12 divisors (see below), whose sum is σ = 213664568796. Its totient is φ = 60631732640.

The previous prime is 121678752289. The next prime is 121678752313. The reversal of 121678752292 is 292257876121.

It can be written as a sum of positive squares in 2 ways, for example, as 71441805796 + 50236946496 = 267286^2 + 224136^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51909559 + ... + 51911902.

It is an arithmetic number, because the mean of its divisors is an integer number (17805380733).

Almost surely, 2^121678752292 is an apocalyptic number.

It is an amenable number.

121678752292 is a deficient number, since it is larger than the sum of its proper divisors (91985816504).

121678752292 is a wasteful number, since it uses less digits than its factorization.

121678752292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103821758 (or 103821756 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 52.

The spelling of 121678752292 in words is "one hundred twenty-one billion, six hundred seventy-eight million, seven hundred fifty-two thousand, two hundred ninety-two".