9910121 has 8 divisors (see below), whose sum is σ = 10848264. Its totient is φ = 8997120.

The previous prime is 9910097. The next prime is 9910123. The reversal of 9910121 is 1210199.

It can be written as a sum of positive squares in 4 ways, for example, as 75625 + 9834496 = 275^2 + 3136^2 .

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 9910121 - 2²² = 5715817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9910123) 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, 5456 + ... + 7041.

It is an arithmetic number, because the mean of its divisors is an integer number (1356033).

Almost surely, 2^9910121 is an apocalyptic number.

It is an amenable number.

9910121 is a deficient number, since it is larger than the sum of its proper divisors (938143).

9910121 is a wasteful number, since it uses less digits than its factorization.

9910121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12571.

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 9910121 is about 3148.0344661391. The cubic root of 9910121 is about 214.7960640564.

The spelling of 9910121 in words is "nine million, nine hundred ten thousand, one hundred twenty-one".