2021020212211 has 32 divisors (see below), whose sum is σ = 2740404473856. Its totient is φ = 1439287920000.

The previous prime is 2021020212179. The next prime is 2021020212227. The reversal of 2021020212211 is 1122120201202.

It is a happy number.

It is not a de Polignac number, because 2021020212211 - 2⁵ = 2021020212179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021020210211) 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 31 ways as a sum of consecutive naturals, for example, 9893955 + ... + 10096156.

It is an arithmetic number, because the mean of its divisors is an integer number (85637639808).

Almost surely, 2^{2021020212211} is an apocalyptic number.

2021020212211 is a deficient number, since it is larger than the sum of its proper divisors (719384261645).

2021020212211 is a wasteful number, since it uses less digits than its factorization.

2021020212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19990243.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2021020212211 its reverse (1122120201202), we get a palindrome (3143140413413).

The spelling of 2021020212211 in words is "two trillion, twenty-one billion, twenty million, two hundred twelve thousand, two hundred eleven".