2112111221109 has 8 divisors (see below), whose sum is σ = 2892260411040. Its totient is φ = 1370018089296.

The previous prime is 2112111221081. The next prime is 2112111221119. The reversal of 2112111221109 is 9011221112112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2112111221109 - 2⁷ = 2112111220981 is a prime.

It is a super-2 number, since 2×2112111221109² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112111221119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9514014399 + ... + 9514014620.

It is an arithmetic number, because the mean of its divisors is an integer number (361532551380).

Almost surely, 2^{2112111221109} is an apocalyptic number.

It is an amenable number.

2112111221109 is a deficient number, since it is larger than the sum of its proper divisors (780149189931).

2112111221109 is a wasteful number, since it uses less digits than its factorization.

2112111221109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19028029059.

The product of its (nonzero) digits is 144, while the sum is 24.

The spelling of 2112111221109 in words is "two trillion, one hundred twelve billion, one hundred eleven million, two hundred twenty-one thousand, one hundred nine".