9212000121 has 6 divisors (see below), whose sum is σ = 13306222410. Its totient is φ = 6141333408.

The previous prime is 9212000117. The next prime is 9212000143. The reversal of 9212000121 is 1210002129.

It can be written as a sum of positive squares in only one way, i.e., 6713999721 + 2498000400 = 81939^2 + 49980^2 .

It is not a de Polignac number, because 9212000121 - 2² = 9212000117 is a prime.

It is a super-3 number, since 3×9212000121³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9212000094 and 9212000103.

It is not an unprimeable number, because it can be changed into a prime (9212000111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 511777776 + ... + 511777793.

It is an arithmetic number, because the mean of its divisors is an integer number (2217703735).

Almost surely, 2^9212000121 is an apocalyptic number.

It is an amenable number.

9212000121 is a deficient number, since it is larger than the sum of its proper divisors (4094222289).

9212000121 is a wasteful number, since it uses less digits than its factorization.

9212000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023555575 (or 1023555572 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 9212000121 is about 95979.1650359598. The cubic root of 9212000121 is about 2096.2897541005.

The spelling of 9212000121 in words is "nine billion, two hundred twelve million, one hundred twenty-one", and thus it is an aban number.