2112012102091 has 4 divisors (see below), whose sum is σ = 2223170633800. Its totient is φ = 2000853570384.

The previous prime is 2112012102037. The next prime is 2112012102107. The reversal of 2112012102091 is 1902012102112.

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

It is a cyclic number.

It is not a de Polignac number, because 2112012102091 - 2²¹ = 2112010004939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2112012102691) 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, 55579265826 + ... + 55579265863.

It is an arithmetic number, because the mean of its divisors is an integer number (555792658450).

Almost surely, 2^{2112012102091} is an apocalyptic number.

2112012102091 is a deficient number, since it is larger than the sum of its proper divisors (111158531709).

2112012102091 is a wasteful number, since it uses less digits than its factorization.

2112012102091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111158531708.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 2112012102091 in words is "two trillion, one hundred twelve billion, twelve million, one hundred two thousand, ninety-one".