102011101010989 has 2 divisors, whose sum is σ = 102011101010990. Its totient is φ = 102011101010988.

The previous prime is 102011101010971. The next prime is 102011101011013. The reversal of 102011101010989 is 989010101110201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98653165704900 + 3357935306089 = 9932430^2 + 1832467^2 .

It is a cyclic number.

It is not a de Polignac number, because 102011101010989 - 2⁹ = 102011101010477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102011101013989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51005550505494 + 51005550505495.

It is an arithmetic number, because the mean of its divisors is an integer number (51005550505495).

Almost surely, 2^{102011101010989} is an apocalyptic number.

It is an amenable number.

102011101010989 is a deficient number, since it is larger than the sum of its proper divisors (1).

102011101010989 is an equidigital number, since it uses as much as digits as its factorization.

102011101010989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 34.

The spelling of 102011101010989 in words is "one hundred two trillion, eleven billion, one hundred one million, ten thousand, nine hundred eighty-nine".