10101099989 has 2 divisors, whose sum is σ = 10101099990. Its totient is φ = 10101099988.

The previous prime is 10101099961. The next prime is 10101100019. The reversal of 10101099989 is 98999010101.

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., 5816350225 + 4284749764 = 76265^2 + 65458^2 .

It is a cyclic number.

It is not a de Polignac number, because 10101099989 - 2⁸ = 10101099733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10101099919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050549994 + 5050549995.

It is an arithmetic number, because the mean of its divisors is an integer number (5050549995).

Almost surely, 2^10101099989 is an apocalyptic number.

It is an amenable number.

10101099989 is a deficient number, since it is larger than the sum of its proper divisors (1).

10101099989 is an equidigital number, since it uses as much as digits as its factorization.

10101099989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 47.

The spelling of 10101099989 in words is "ten billion, one hundred one million, ninety-nine thousand, nine hundred eighty-nine".