1220120020011 has 16 divisors (see below), whose sum is σ = 1739245906944. Its totient is φ = 758132824704.

The previous prime is 1220120019991. The next prime is 1220120020027. The reversal of 1220120020011 is 1100200210221.

It is not a de Polignac number, because 1220120020011 - 2¹⁸ = 1220119757867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220120020051) 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, 116130291 + ... + 116140796.

It is an arithmetic number, because the mean of its divisors is an integer number (108702869184).

Almost surely, 2^{1220120020011} is an apocalyptic number.

1220120020011 is a deficient number, since it is larger than the sum of its proper divisors (519125886933).

1220120020011 is a wasteful number, since it uses less digits than its factorization.

1220120020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232271210.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1220120020011 its reverse (1100200210221), we get a palindrome (2320320230232).

The spelling of 1220120020011 in words is "one trillion, two hundred twenty billion, one hundred twenty million, twenty thousand, eleven".