2020121121211 has 4 divisors (see below), whose sum is σ = 2020136347152. Its totient is φ = 2020105895272.

The previous prime is 2020121121199. The next prime is 2020121121287. The reversal of 2020121121211 is 1121211210202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2020121121211 - 2¹⁵ = 2020121088443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2020121121511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7412191 + ... + 7679896.

It is an arithmetic number, because the mean of its divisors is an integer number (505034086788).

Almost surely, 2^{2020121121211} is an apocalyptic number.

2020121121211 is a deficient number, since it is larger than the sum of its proper divisors (15225941).

2020121121211 is a wasteful number, since it uses less digits than its factorization.

2020121121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15225940.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2020121121211 its reverse (1121211210202), we get a palindrome (3141332331413).

The spelling of 2020121121211 in words is "two trillion, twenty billion, one hundred twenty-one million, one hundred twenty-one thousand, two hundred eleven".