9999990101 has 8 divisors (see below), whose sum is σ = 10142745984. Its totient is φ = 9857287440.

The previous prime is 9999990097. The next prime is 9999990107. The reversal of 9999990101 is 1010999999.

9999990101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9999990101 - 2² = 9999990097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999990107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 511040 + ... + 530246.

It is an arithmetic number, because the mean of its divisors is an integer number (1267843248).

Almost surely, 2^9999990101 is an apocalyptic number.

It is an amenable number.

9999990101 is a deficient number, since it is larger than the sum of its proper divisors (142755883).

9999990101 is a wasteful number, since it uses less digits than its factorization.

9999990101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26611.

The product of its (nonzero) digits is 531441, while the sum is 56.

The square root of 9999990101 is about 99999.9505049878. The cubic root of 9999990101 is about 2154.4339791400.

It can be divided in two parts, 999 and 9990101, that multiplied together give a palindrome (9980110899).

The spelling of 9999990101 in words is "nine billion, nine hundred ninety-nine million, nine hundred ninety thousand, one hundred one".