2001422231 has 2 divisors, whose sum is σ = 2001422232. Its totient is φ = 2001422230.

The previous prime is 2001422221. The next prime is 2001422233. The reversal of 2001422231 is 1322241002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001422231 is a prime.

It is a super-2 number, since 2×2001422231² = 8011381893482034722, which contains 22 as substring.

Together with 2001422233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001422233) 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 as a sum of consecutive naturals, namely, 1000711115 + 1000711116.

It is an arithmetic number, because the mean of its divisors is an integer number (1000711116).

Almost surely, 2^2001422231 is an apocalyptic number.

2001422231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001422231 is an equidigital number, since it uses as much as digits as its factorization.

2001422231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2001422231 is about 44737.2577501125. The cubic root of 2001422231 is about 1260.2196289271.

Adding to 2001422231 its reverse (1322241002), we get a palindrome (3323663233).

The spelling of 2001422231 in words is "two billion, one million, four hundred twenty-two thousand, two hundred thirty-one".