212233109 has 8 divisors (see below), whose sum is σ = 233692128. Its totient is φ = 191134960.

The previous prime is 212233103. The next prime is 212233141. The reversal of 212233109 is 901332212.

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 212233109 - 2¹⁶ = 212167573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212233103) 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, 88982 + ... + 91335.

It is an arithmetic number, because the mean of its divisors is an integer number (29211516).

Almost surely, 2^212233109 is an apocalyptic number.

It is an amenable number.

212233109 is a deficient number, since it is larger than the sum of its proper divisors (21459019).

212233109 is a wasteful number, since it uses less digits than its factorization.

212233109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180435.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 212233109 is about 14568.2225751805. Note that the first 3 decimals coincide. The cubic root of 212233109 is about 596.4916639095.

The spelling of 212233109 in words is "two hundred twelve million, two hundred thirty-three thousand, one hundred nine".