121002200009 has 8 divisors (see below), whose sum is σ = 122462759880. Its totient is φ = 119543884416.

The previous prime is 121002199999. The next prime is 121002200021. The reversal of 121002200009 is 900002200121.

It can be written as a sum of positive squares in 4 ways, for example, as 9526345609 + 111475854400 = 97603^2 + 333880^2 .

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 121002200009 - 2⁸ = 121002199753 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 121002200009.

It is not an unprimeable number, because it can be changed into a prime (121002200609) 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, 452462 + ... + 668375.

It is an arithmetic number, because the mean of its divisors is an integer number (15307844985).

Almost surely, 2^121002200009 is an apocalyptic number.

It is an amenable number.

121002200009 is a deficient number, since it is larger than the sum of its proper divisors (1460559871).

121002200009 is a wasteful number, since it uses less digits than its factorization.

121002200009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122139.

The product of its (nonzero) digits is 72, while the sum is 17.

The spelling of 121002200009 in words is "one hundred twenty-one billion, two million, two hundred thousand, nine".