2021022231 has 16 divisors (see below), whose sum is σ = 2816039424. Its totient is φ = 1288010304.

The previous prime is 2021022217. The next prime is 2021022287. The reversal of 2021022231 is 1322201202.

It is a happy number.

It is not a de Polignac number, because 2021022231 - 2¹⁰ = 2021021207 is a prime.

It is a super-2 number, since 2×2021022231² = 8169061716392434722, which contains 22 as substring.

2021022231 is a modest number, since divided by 22231 gives 2021 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 2021022231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021027231) 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 15 ways as a sum of consecutive naturals, for example, 160606 + ... + 172731.

It is an arithmetic number, because the mean of its divisors is an integer number (176002464).

Almost surely, 2^2021022231 is an apocalyptic number.

2021022231 is a deficient number, since it is larger than the sum of its proper divisors (795017193).

2021022231 is a wasteful number, since it uses less digits than its factorization.

2021022231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333430.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2021022231 is about 44955.7808407328. The cubic root of 2021022231 is about 1264.3200647493.

Adding to 2021022231 its reverse (1322201202), we get a palindrome (3343223433).

The spelling of 2021022231 in words is "two billion, twenty-one million, twenty-two thousand, two hundred thirty-one".