101210309989 has 2 divisors, whose sum is σ = 101210309990. Its totient is φ = 101210309988.

The previous prime is 101210309969. The next prime is 101210310011. The reversal of 101210309989 is 989903012101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100371744225 + 838565764 = 316815^2 + 28958^2 .

It is a cyclic number.

It is not a de Polignac number, because 101210309989 - 2¹⁵ = 101210277221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101210309939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50605154994 + 50605154995.

It is an arithmetic number, because the mean of its divisors is an integer number (50605154995).

Almost surely, 2^101210309989 is an apocalyptic number.

It is an amenable number.

101210309989 is a deficient number, since it is larger than the sum of its proper divisors (1).

101210309989 is an equidigital number, since it uses as much as digits as its factorization.

101210309989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 43.

The spelling of 101210309989 in words is "one hundred one billion, two hundred ten million, three hundred nine thousand, nine hundred eighty-nine".