2012021122209 has 32 divisors (see below), whose sum is σ = 3133217181696. Its totient is φ = 1124528261760.

The previous prime is 2012021122171. The next prime is 2012021122217. The reversal of 2012021122209 is 9022211202102.

It is not a de Polignac number, because 2012021122209 - 2⁸ = 2012021121953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2012021122249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 845349 + ... + 2176845.

It is an arithmetic number, because the mean of its divisors is an integer number (97913036928).

Almost surely, 2^{2012021122209} is an apocalyptic number.

It is an amenable number.

2012021122209 is a deficient number, since it is larger than the sum of its proper divisors (1121196059487).

2012021122209 is a wasteful number, since it uses less digits than its factorization.

2012021122209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333085.

The product of its (nonzero) digits is 576, while the sum is 24.

The spelling of 2012021122209 in words is "two trillion, twelve billion, twenty-one million, one hundred twenty-two thousand, two hundred nine".