101211110989 has 2 divisors, whose sum is σ = 101211110990. Its totient is φ = 101211110988.

The previous prime is 101211110983. The next prime is 101211111017. The reversal of 101211110989 is 989011112101.

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., 101101741225 + 109369764 = 317965^2 + 10458^2 .

It is a cyclic number.

It is not a de Polignac number, because 101211110989 - 2⁹ = 101211110477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101211110983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50605555494 + 50605555495.

It is an arithmetic number, because the mean of its divisors is an integer number (50605555495).

Almost surely, 2^101211110989 is an apocalyptic number.

It is an amenable number.

101211110989 is a deficient number, since it is larger than the sum of its proper divisors (1).

101211110989 is an equidigital number, since it uses as much as digits as its factorization.

101211110989 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 101211110989 in words is "one hundred one billion, two hundred eleven million, one hundred ten thousand, nine hundred eighty-nine".