2021122231 has 16 divisors (see below), whose sum is σ = 2179457280. Its totient is φ = 1867265920.

The previous prime is 2021122219. The next prime is 2021122241. The reversal of 2021122231 is 1322211202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2021122231 - 2⁵ = 2021122199 is a prime.

It is a super-2 number, since 2×2021122231² = 8169870145284834722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021122241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1093350 + ... + 1095196.

It is an arithmetic number, because the mean of its divisors is an integer number (136216080).

Almost surely, 2^2021122231 is an apocalyptic number.

2021122231 is a deficient number, since it is larger than the sum of its proper divisors (158335049).

2021122231 is a wasteful number, since it uses less digits than its factorization.

2021122231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3014.

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

The square root of 2021122231 is about 44956.8930309914. The cubic root of 2021122231 is about 1264.3409172201.

Adding to 2021122231 its reverse (1322211202), we get a palindrome (3343333433).

The spelling of 2021122231 in words is "two billion, twenty-one million, one hundred twenty-two thousand, two hundred thirty-one".