101220002000989 has 2 divisors, whose sum is σ = 101220002000990. Its totient is φ = 101220002000988.

The previous prime is 101220002000983. The next prime is 101220002001017. The reversal of 101220002000989 is 989000200022101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69871760898489 + 31348241102500 = 8358933^2 + 5598950^2 .

It is a cyclic number.

It is not a de Polignac number, because 101220002000989 - 2¹³ = 101220001992797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101220002000983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610001000494 + 50610001000495.

It is an arithmetic number, because the mean of its divisors is an integer number (50610001000495).

Almost surely, 2^{101220002000989} is an apocalyptic number.

It is an amenable number.

101220002000989 is a deficient number, since it is larger than the sum of its proper divisors (1).

101220002000989 is an equidigital number, since it uses as much as digits as its factorization.

101220002000989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 34.

The spelling of 101220002000989 in words is "one hundred one trillion, two hundred twenty billion, two million, nine hundred eighty-nine", and thus it is an aban number.