12011012112109 has 16 divisors (see below), whose sum is σ = 12063518058240. Its totient is φ = 11958627761280.

The previous prime is 12011012112107. The next prime is 12011012112133. The reversal of 12011012112109 is 90121121011021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12011012112109 - 2¹ = 12011012112107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12011012112109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011012112103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 619721599 + ... + 619740979.

It is an arithmetic number, because the mean of its divisors is an integer number (753969878640).

Almost surely, 2^{12011012112109} is an apocalyptic number.

It is an amenable number.

12011012112109 is a deficient number, since it is larger than the sum of its proper divisors (52505946131).

12011012112109 is a wasteful number, since it uses less digits than its factorization.

12011012112109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22380.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 12011012112109 in words is "twelve trillion, eleven billion, twelve million, one hundred twelve thousand, one hundred nine".