101212011209887 has 2 divisors, whose sum is σ = 101212011209888. Its totient is φ = 101212011209886.

The previous prime is 101212011209857. The next prime is 101212011210017. The reversal of 101212011209887 is 788902110212101.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101212011209887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101212011209857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50606005604943 + 50606005604944.

It is an arithmetic number, because the mean of its divisors is an integer number (50606005604944).

Almost surely, 2^{101212011209887} is an apocalyptic number.

101212011209887 is a deficient number, since it is larger than the sum of its proper divisors (1).

101212011209887 is an equidigital number, since it uses as much as digits as its factorization.

101212011209887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 43.

The spelling of 101212011209887 in words is "one hundred one trillion, two hundred twelve billion, eleven million, two hundred nine thousand, eight hundred eighty-seven".