9812202210121 has 16 divisors (see below), whose sum is σ = 10372763091600. Its totient is φ = 9267516131328.

The previous prime is 9812202210113. The next prime is 9812202210163. The reversal of 9812202210121 is 1210122022189.

It can be written as a sum of positive squares in 8 ways, for example, as 860952015625 + 8951250194496 = 927875^2 + 2991864^2 .

It is a cyclic number.

It is not a de Polignac number, because 9812202210121 - 2³ = 9812202210113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9812202210521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8953836 + ... + 9989773.

It is an arithmetic number, because the mean of its divisors is an integer number (648297693225).

Almost surely, 2^{9812202210121} is an apocalyptic number.

It is an amenable number.

9812202210121 is a deficient number, since it is larger than the sum of its proper divisors (560560881479).

9812202210121 is a wasteful number, since it uses less digits than its factorization.

9812202210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18944028.

The product of its (nonzero) digits is 2304, while the sum is 31.

The spelling of 9812202210121 in words is "nine trillion, eight hundred twelve billion, two hundred two million, two hundred ten thousand, one hundred twenty-one".