2000121287 has 2 divisors, whose sum is σ = 2000121288. Its totient is φ = 2000121286.

The previous prime is 2000121257. The next prime is 2000121313. The reversal of 2000121287 is 7821210002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2000121287 - 2⁶ = 2000121223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2000121217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000060643 + 1000060644.

It is an arithmetic number, because the mean of its divisors is an integer number (1000060644).

Almost surely, 2^2000121287 is an apocalyptic number.

2000121287 is a deficient number, since it is larger than the sum of its proper divisors (1).

2000121287 is an equidigital number, since it uses as much as digits as its factorization.

2000121287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 2000121287 is about 44722.7155593218. The cubic root of 2000121287 is about 1259.9465180541.

Adding to 2000121287 its reverse (7821210002), we get a palindrome (9821331289).

The spelling of 2000121287 in words is "two billion, one hundred twenty-one thousand, two hundred eighty-seven".