9920101 has 4 divisors (see below), whose sum is σ = 9954252. Its totient is φ = 9885952.

The previous prime is 9920089. The next prime is 9920111. The reversal of 9920101 is 1010299.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1010299 = 911 ⋅1109.

It can be written as a sum of positive squares in 2 ways, for example, as 9771876 + 148225 = 3126^2 + 385^2 .

It is a cyclic number.

It is not a de Polignac number, because 9920101 - 2¹⁵ = 9887333 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 (9920111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16636 + ... + 17221.

It is an arithmetic number, because the mean of its divisors is an integer number (2488563).

Almost surely, 2^9920101 is an apocalyptic number.

It is an amenable number.

9920101 is a deficient number, since it is larger than the sum of its proper divisors (34151).

9920101 is a wasteful number, since it uses less digits than its factorization.

9920101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34150.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 9920101 is about 3149.6191833299. The cubic root of 9920101 is about 214.8681434160.

The spelling of 9920101 in words is "nine million, nine hundred twenty thousand, one hundred one".