1220020111009 has 16 divisors (see below), whose sum is σ = 1405680160768. Its totient is φ = 1037207529792.

The previous prime is 1220020111001. The next prime is 1220020111061. The reversal of 1220020111009 is 9001110200221.

It is a happy number.

It is not a de Polignac number, because 1220020111009 - 2³ = 1220020111001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220020111001) 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 15 ways as a sum of consecutive naturals, for example, 3022039 + ... + 3401875.

It is an arithmetic number, because the mean of its divisors is an integer number (87855010048).

Almost surely, 2^{1220020111009} is an apocalyptic number.

It is an amenable number.

1220020111009 is a deficient number, since it is larger than the sum of its proper divisors (185660049759).

1220020111009 is a wasteful number, since it uses less digits than its factorization.

1220020111009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383584.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 1220020111009 in words is "one trillion, two hundred twenty billion, twenty million, one hundred eleven thousand, nine".