2000221231 has 4 divisors (see below), whose sum is σ = 2001871432. Its totient is φ = 1998571032.

The previous prime is 2000221213. The next prime is 2000221261. The reversal of 2000221231 is 1321220002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1321220002 = 2 ⋅660610001.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2000221231 is a prime.

It is a super-2 number, since 2×2000221231² = 8001769945886310722, 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 (2000221261) 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 3 ways as a sum of consecutive naturals, for example, 823281 + ... + 825706.

It is an arithmetic number, because the mean of its divisors is an integer number (500467858).

Almost surely, 2^2000221231 is an apocalyptic number.

2000221231 is a deficient number, since it is larger than the sum of its proper divisors (1650201).

2000221231 is a wasteful number, since it uses less digits than its factorization.

2000221231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650200.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2000221231 is about 44723.8329193731. The cubic root of 2000221231 is about 1259.9675037810.

Adding to 2000221231 its reverse (1321220002), we get a palindrome (3321441233).

The spelling of 2000221231 in words is "two billion, two hundred twenty-one thousand, two hundred thirty-one".