9811220101 has 8 divisors (see below), whose sum is σ = 10568047104. Its totient is φ = 9081914160.

The previous prime is 9811220071. The next prime is 9811220113. The reversal of 9811220101 is 1010221189.

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 9811220101 - 2¹³ = 9811211909 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 (9811220191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6879526 + ... + 6880951.

It is an arithmetic number, because the mean of its divisors is an integer number (1321005888).

Almost surely, 2^9811220101 is an apocalyptic number.

It is an amenable number.

9811220101 is a deficient number, since it is larger than the sum of its proper divisors (756827003).

9811220101 is a wasteful number, since it uses less digits than its factorization.

9811220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13760531.

The product of its (nonzero) digits is 288, while the sum is 25.

The square root of 9811220101 is about 99051.6032227646. The cubic root of 9811220101 is about 2140.7913413228.

The spelling of 9811220101 in words is "nine billion, eight hundred eleven million, two hundred twenty thousand, one hundred one".