2020111221211 has 4 divisors (see below), whose sum is σ = 2063092311072. Its totient is φ = 1977130131352.

The previous prime is 2020111221173. The next prime is 2020111221221. The reversal of 2020111221211 is 1121221110202.

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 2020111221211 - 2²⁷ = 2019977003483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2020111221221) 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, 21490544860 + ... + 21490544953.

It is an arithmetic number, because the mean of its divisors is an integer number (515773077768).

Almost surely, 2^{2020111221211} is an apocalyptic number.

2020111221211 is a deficient number, since it is larger than the sum of its proper divisors (42981089861).

2020111221211 is an equidigital number, since it uses as much as digits as its factorization.

2020111221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42981089860.

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

Adding to 2020111221211 its reverse (1121221110202), we get a palindrome (3141332331413).

The spelling of 2020111221211 in words is "two trillion, twenty billion, one hundred eleven million, two hundred twenty-one thousand, two hundred eleven".