2020011221121 has 16 divisors (see below), whose sum is σ = 2932865659200. Its totient is φ = 1231803574848.

The previous prime is 2020011221117. The next prime is 2020011221141. The reversal of 2020011221121 is 1211221100202.

It is not a de Polignac number, because 2020011221121 - 2² = 2020011221117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2020011221121.

It is not an unprimeable number, because it can be changed into a prime (2020011221141) 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, 611012026 + ... + 611015331.

It is an arithmetic number, because the mean of its divisors is an integer number (183304103700).

Almost surely, 2^{2020011221121} is an apocalyptic number.

It is an amenable number.

2020011221121 is a deficient number, since it is larger than the sum of its proper divisors (912854438079).

2020011221121 is a wasteful number, since it uses less digits than its factorization.

2020011221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222027408.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2020011221121 its reverse (1211221100202), we get a palindrome (3231232321323).

The spelling of 2020011221121 in words is "two trillion, twenty billion, eleven million, two hundred twenty-one thousand, one hundred twenty-one".