2112102209977 has 4 divisors (see below), whose sum is σ = 2112224194276. Its totient is φ = 2111980225680.

The previous prime is 2112102209957. The next prime is 2112102209983. The reversal of 2112102209977 is 7799022012112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1264480009081 + 847622200896 = 1124491^2 + 920664^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2112102209977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2112102209957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60966174 + ... + 61000807.

It is an arithmetic number, because the mean of its divisors is an integer number (528056048569).

Almost surely, 2^{2112102209977} is an apocalyptic number.

It is an amenable number.

2112102209977 is a deficient number, since it is larger than the sum of its proper divisors (121984299).

2112102209977 is a wasteful number, since it uses less digits than its factorization.

2112102209977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121984298.

The product of its (nonzero) digits is 63504, while the sum is 43.

The spelling of 2112102209977 in words is "two trillion, one hundred twelve billion, one hundred two million, two hundred nine thousand, nine hundred seventy-seven".