2112212109 has 8 divisors (see below), whose sum is σ = 3218608960. Its totient is φ = 1206978336.

The previous prime is 2112212099. The next prime is 2112212117. The reversal of 2112212109 is 9012122112.

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

It is not a de Polignac number, because 2112212109 - 2⁵ = 2112212077 is a prime.

It is a super-2 number, since 2×2112212109² = 8922879986812455762, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 100581529 = 2112212109 / (2 + 1 + 1 + 2 + 2 + 1 + 2 + 1 + 0 + 9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112212119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50290744 + ... + 50290785.

It is an arithmetic number, because the mean of its divisors is an integer number (402326120).

Almost surely, 2^2112212109 is an apocalyptic number.

It is an amenable number.

2112212109 is a deficient number, since it is larger than the sum of its proper divisors (1106396851).

2112212109 is a wasteful number, since it uses less digits than its factorization.

2112212109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100581539.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 2112212109 is about 45958.8088292114. The cubic root of 2112212109 is about 1283.0566817537.

The spelling of 2112212109 in words is "two billion, one hundred twelve million, two hundred twelve thousand, one hundred nine".