2001422887 has 2 divisors, whose sum is σ = 2001422888. Its totient is φ = 2001422886.

The previous prime is 2001422867. The next prime is 2001422923. The reversal of 2001422887 is 7882241002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001422887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001422827) 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 as a sum of consecutive naturals, namely, 1000711443 + 1000711444.

It is an arithmetic number, because the mean of its divisors is an integer number (1000711444).

Almost surely, 2^2001422887 is an apocalyptic number.

2001422887 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001422887 is an equidigital number, since it uses as much as digits as its factorization.

2001422887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 2001422887 is about 44737.2650818085. The cubic root of 2001422887 is about 1260.2197666132.

Adding to 2001422887 its reverse (7882241002), we get a palindrome (9883663889).

The spelling of 2001422887 in words is "two billion, one million, four hundred twenty-two thousand, eight hundred eighty-seven".