9521106121 has 4 divisors (see below), whose sum is σ = 9528804292. Its totient is φ = 9513407952.

The previous prime is 9521106107. The next prime is 9521106137. The reversal of 9521106121 is 1216011259.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4888806400 + 4632299721 = 69920^2 + 68061^2 .

It is a cyclic number.

It is not a de Polignac number, because 9521106121 - 2²¹ = 9519008969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9521106121.

It is not an unprimeable number, because it can be changed into a prime (9521106181) 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, 3847230 + ... + 3849703.

It is an arithmetic number, because the mean of its divisors is an integer number (2382201073).

Almost surely, 2^9521106121 is an apocalyptic number.

It is an amenable number.

9521106121 is a deficient number, since it is larger than the sum of its proper divisors (7698171).

9521106121 is a wasteful number, since it uses less digits than its factorization.

9521106121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7698170.

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 9521106121 is about 97576.1554940550. The cubic root of 9521106121 is about 2119.4790847379.

The spelling of 9521106121 in words is "nine billion, five hundred twenty-one million, one hundred six thousand, one hundred twenty-one".