9215005000121 has 8 divisors (see below), whose sum is σ = 9269215305960. Its totient is φ = 9160861335552.

The previous prime is 9215005000073. The next prime is 9215005000133. The reversal of 9215005000121 is 1210005005129.

It can be written as a sum of positive squares in 4 ways, for example, as 4928448840121 + 4286556160000 = 2220011^2 + 2070400^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9215005000121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9215005000171) 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, 16382936 + ... + 16936073.

It is an arithmetic number, because the mean of its divisors is an integer number (1158651913245).

Almost surely, 2^{9215005000121} is an apocalyptic number.

It is an amenable number.

9215005000121 is a deficient number, since it is larger than the sum of its proper divisors (54210305839).

9215005000121 is a wasteful number, since it uses less digits than its factorization.

9215005000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33320635.

The product of its (nonzero) digits is 900, while the sum is 26.

The spelling of 9215005000121 in words is "nine trillion, two hundred fifteen billion, five million, one hundred twenty-one", and thus it is an aban number.