122001121019978 has 16 divisors (see below), whose sum is σ = 190959184160640. Its totient is φ = 58348084849296.

The previous prime is 122001121019959. The next prime is 122001121020007. The reversal of 122001121019978 is 879910121100221.

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, 3646451 + ... + 16040537.

It is an arithmetic number, because the mean of its divisors is an integer number (11934949010040).

Almost surely, 2^{122001121019978} is an apocalyptic number.

122001121019978 is a deficient number, since it is larger than the sum of its proper divisors (68958063140662).

122001121019978 is a wasteful number, since it uses less digits than its factorization.

122001121019978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12608101.

The product of its (nonzero) digits is 36288, while the sum is 44.

The spelling of 122001121019978 in words is "one hundred twenty-two trillion, one billion, one hundred twenty-one million, nineteen thousand, nine hundred seventy-eight".