10002121021205 has 8 divisors (see below), whose sum is σ = 12002573819904. Its totient is φ = 8001677754000.

The previous prime is 10002121021199. The next prime is 10002121021237. The reversal of 10002121021205 is 50212012120001.

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

It is not a de Polignac number, because 10002121021205 - 2⁶ = 10002121021141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175460 + ... + 4476050.

It is an arithmetic number, because the mean of its divisors is an integer number (1500321727488).

Almost surely, 2^{10002121021205} is an apocalyptic number.

It is an amenable number.

10002121021205 is a deficient number, since it is larger than the sum of its proper divisors (2000452798699).

10002121021205 is an equidigital number, since it uses as much as digits as its factorization.

10002121021205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4765747.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 10002121021205 its reverse (50212012120001), we get a palindrome (60214133141206).

The spelling of 10002121021205 in words is "ten trillion, two billion, one hundred twenty-one million, twenty-one thousand, two hundred five".