121978980197392 has 160 divisors (see below), whose sum is σ = 244339813036800. Its totient is φ = 58967149824000.

The previous prime is 121978980197377. The next prime is 121978980197449. The reversal of 121978980197392 is 293791089879121.

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, 41056538467 + ... + 41056541437.

It is an arithmetic number, because the mean of its divisors is an integer number (1527123831480).

Almost surely, 2^{121978980197392} is an apocalyptic number.

It is an amenable number.

121978980197392 is an abundant number, since it is smaller than the sum of its proper divisors (122360832839408).

121978980197392 is a wasteful number, since it uses less digits than its factorization.

121978980197392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6033 (or 6027 counting only the distinct ones).

The product of its (nonzero) digits is 246903552, while the sum is 76.

The spelling of 121978980197392 in words is "one hundred twenty-one trillion, nine hundred seventy-eight billion, nine hundred eighty million, one hundred ninety-seven thousand, three hundred ninety-two".