2021232211 has 4 divisors (see below), whose sum is σ = 2021374312. Its totient is φ = 2021090112.

The previous prime is 2021232197. The next prime is 2021232223. The reversal of 2021232211 is 1122321202.

It is a happy number.

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 2021232211 - 2⁹ = 2021231699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021235211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47001 + ... + 79066.

It is an arithmetic number, because the mean of its divisors is an integer number (505343578).

Almost surely, 2^2021232211 is an apocalyptic number.

2021232211 is a deficient number, since it is larger than the sum of its proper divisors (142101).

2021232211 is a wasteful number, since it uses less digits than its factorization.

2021232211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142100.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2021232211 is about 44958.1161860681. The cubic root of 2021232211 is about 1264.3638499734.

Adding to 2021232211 its reverse (1122321202), we get a palindrome (3143553413).

The spelling of 2021232211 in words is "two billion, twenty-one million, two hundred thirty-two thousand, two hundred eleven".