2021130221121 has 24 divisors (see below), whose sum is σ = 3190698239040. Its totient is φ = 1222663183200.

The previous prime is 2021130221111. The next prime is 2021130221147. The reversal of 2021130221121 is 1211220311202.

It is not a de Polignac number, because 2021130221121 - 2¹⁰ = 2021130220097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2021130221094 and 2021130221103.

It is not an unprimeable number, because it can be changed into a prime (2021130221111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18814701 + ... + 18921818.

It is an arithmetic number, because the mean of its divisors is an integer number (132945759960).

Almost surely, 2^{2021130221121} is an apocalyptic number.

It is an amenable number.

2021130221121 is a deficient number, since it is larger than the sum of its proper divisors (1169568017919).

2021130221121 is a wasteful number, since it uses less digits than its factorization.

2021130221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37737077 (or 37737074 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2021130221121 its reverse (1211220311202), we get a palindrome (3232350532323).

The spelling of 2021130221121 in words is "two trillion, twenty-one billion, one hundred thirty million, two hundred twenty-one thousand, one hundred twenty-one".