10121200120987 has 2 divisors, whose sum is σ = 10121200120988. Its totient is φ = 10121200120986.

The previous prime is 10121200120963. The next prime is 10121200121041. The reversal of 10121200120987 is 78902100212101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10121200120987 - 2³¹ = 10119052637339 is a prime.

It is not a weakly prime, because it can be changed into another prime (10121200121987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060600060493 + 5060600060494.

It is an arithmetic number, because the mean of its divisors is an integer number (5060600060494).

Almost surely, 2^{10121200120987} is an apocalyptic number.

10121200120987 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121200120987 is an equidigital number, since it uses as much as digits as its factorization.

10121200120987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 34.

The spelling of 10121200120987 in words is "ten trillion, one hundred twenty-one billion, two hundred million, one hundred twenty thousand, nine hundred eighty-seven".