102012121199887 has 2 divisors, whose sum is σ = 102012121199888. Its totient is φ = 102012121199886.

The previous prime is 102012121199831. The next prime is 102012121200029. The reversal of 102012121199887 is 788991121210201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102012121199887 - 2¹⁹ = 102012120675599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102012121109887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51006060599943 + 51006060599944.

It is an arithmetic number, because the mean of its divisors is an integer number (51006060599944).

Almost surely, 2^{102012121199887} is an apocalyptic number.

102012121199887 is a deficient number, since it is larger than the sum of its proper divisors (1).

102012121199887 is an equidigital number, since it uses as much as digits as its factorization.

102012121199887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 52.

The spelling of 102012121199887 in words is "one hundred two trillion, twelve billion, one hundred twenty-one million, one hundred ninety-nine thousand, eight hundred eighty-seven".