2112122220109 has 8 divisors (see below), whose sum is σ = 2307129612480. Its totient is φ = 1917614208000.

The previous prime is 2112122220073. The next prime is 2112122220113. The reversal of 2112122220109 is 9010222212112.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2112122220109 - 2¹⁷ = 2112122089037 is a prime.

It is a super-2 number, since 2×2112122220109² (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 (2112122220149) 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 7 ways as a sum of consecutive naturals, for example, 124836217 + ... + 124853134.

It is an arithmetic number, because the mean of its divisors is an integer number (288391201560).

Almost surely, 2^{2112122220109} is an apocalyptic number.

It is an amenable number.

2112122220109 is a deficient number, since it is larger than the sum of its proper divisors (195007392371).

2112122220109 is a wasteful number, since it uses less digits than its factorization.

2112122220109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249690131.

The product of its (nonzero) digits is 576, while the sum is 25.

It can be divided in two parts, 2112 and 122220109, that added together give a palindrome (122222221).

The spelling of 2112122220109 in words is "two trillion, one hundred twelve billion, one hundred twenty-two million, two hundred twenty thousand, one hundred nine".