2112002109978 has 16 divisors (see below), whose sum is σ = 4472475056640. Its totient is φ = 662588897216.

The previous prime is 2112002109911. The next prime is 2112002109983. The reversal of 2112002109978 is 8799012002112.

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, 10352951418 + ... + 10352951621.

It is an arithmetic number, because the mean of its divisors is an integer number (279529691040).

Almost surely, 2^{2112002109978} is an apocalyptic number.

2112002109978 is an abundant number, since it is smaller than the sum of its proper divisors (2360472946662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2112002109978 is a wasteful number, since it uses less digits than its factorization.

2112002109978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20705903061.

The product of its (nonzero) digits is 36288, while the sum is 42.

The spelling of 2112002109978 in words is "two trillion, one hundred twelve billion, two million, one hundred nine thousand, nine hundred seventy-eight".