2211012121209 has 32 divisors (see below), whose sum is σ = 3187786596480. Its totient is φ = 1358371026432.

The previous prime is 2211012121189. The next prime is 2211012121217. The reversal of 2211012121209 is 9021212101122.

It is not a de Polignac number, because 2211012121209 - 2⁹ = 2211012120697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2211012121309) 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 31 ways as a sum of consecutive naturals, for example, 9102789 + ... + 9342525.

It is an arithmetic number, because the mean of its divisors is an integer number (99618331140).

Almost surely, 2^{2211012121209} is an apocalyptic number.

It is an amenable number.

2211012121209 is a deficient number, since it is larger than the sum of its proper divisors (976774475271).

2211012121209 is a wasteful number, since it uses less digits than its factorization.

2211012121209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244169.

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

The spelling of 2211012121209 in words is "two trillion, two hundred eleven billion, twelve million, one hundred twenty-one thousand, two hundred nine".