1210121122209 has 8 divisors (see below), whose sum is σ = 1613575790400. Its totient is φ = 806706934416.

The previous prime is 1210121122169. The next prime is 1210121122247. The reversal of 1210121122209 is 9022211210121.

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

It is not a de Polignac number, because 1210121122209 - 2¹⁷ = 1210120991137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1210121122109) 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, 10050277 + ... + 10169970.

It is an arithmetic number, because the mean of its divisors is an integer number (201696973800).

Almost surely, 2^{1210121122209} is an apocalyptic number.

It is an amenable number.

1210121122209 is a deficient number, since it is larger than the sum of its proper divisors (403454668191).

1210121122209 is a wasteful number, since it uses less digits than its factorization.

1210121122209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20240199.

The product of its (nonzero) digits is 288, while the sum is 24.

The spelling of 1210121122209 in words is "one trillion, two hundred ten billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred nine".