1200020122209 has 16 divisors (see below), whose sum is σ = 1601264923200. Its totient is φ = 799394506560.

The previous prime is 1200020122199. The next prime is 1200020122241. The reversal of 1200020122209 is 9022210200021.

It is a happy number.

It is not a de Polignac number, because 1200020122209 - 2¹³ = 1200020114017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1200020122309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58593079 + ... + 58613555.

It is an arithmetic number, because the mean of its divisors is an integer number (100079057700).

Almost surely, 2^{1200020122209} is an apocalyptic number.

It is an amenable number.

1200020122209 is a deficient number, since it is larger than the sum of its proper divisors (401244800991).

1200020122209 is a wasteful number, since it uses less digits than its factorization.

1200020122209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34640.

The product of its (nonzero) digits is 288, while the sum is 21.

The spelling of 1200020122209 in words is "one trillion, two hundred billion, twenty million, one hundred twenty-two thousand, two hundred nine".