2010121987 has 2 divisors, whose sum is σ = 2010121988. Its totient is φ = 2010121986.

The previous prime is 2010121907. The next prime is 2010122011. The reversal of 2010121987 is 7891210102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2010121987 - 2¹¹ = 2010119939 is a prime.

It is not a weakly prime, because it can be changed into another prime (2010121907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005060993 + 1005060994.

It is an arithmetic number, because the mean of its divisors is an integer number (1005060994).

Almost surely, 2^2010121987 is an apocalyptic number.

2010121987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2010121987 is an equidigital number, since it uses as much as digits as its factorization.

2010121987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 2010121987 is about 44834.3839814935. The cubic root of 2010121987 is about 1262.0429583370.

The spelling of 2010121987 in words is "two billion, ten million, one hundred twenty-one thousand, nine hundred eighty-seven".