2111021112109 has 64 divisors (see below), whose sum is σ = 2784409205760. Its totient is φ = 1552998666240.

The previous prime is 2111021112107. The next prime is 2111021112119. The reversal of 2111021112109 is 9012111201112.

It is a happy number.

It is not a de Polignac number, because 2111021112109 - 2¹ = 2111021112107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2111021112109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111021112107) 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 63 ways as a sum of consecutive naturals, for example, 67066827 + ... + 67098295.

It is an arithmetic number, because the mean of its divisors is an integer number (43506393840).

Almost surely, 2^{2111021112109} is an apocalyptic number.

It is an amenable number.

2111021112109 is a deficient number, since it is larger than the sum of its proper divisors (673388093651).

2111021112109 is a wasteful number, since it uses less digits than its factorization.

2111021112109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32030.

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

The spelling of 2111021112109 in words is "two trillion, one hundred eleven billion, twenty-one million, one hundred twelve thousand, one hundred nine".