20100220000121 has 8 divisors (see below), whose sum is σ = 20570666792544. Its totient is φ = 19629909563040.

The previous prime is 20100220000037. The next prime is 20100220000129. The reversal of 20100220000121 is 12100002200102.

It is a happy number.

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 20100220000121 - 2¹⁴ = 20100219983737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20100220000129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33790535 + ... + 34380236.

It is an arithmetic number, because the mean of its divisors is an integer number (2571333349068).

Almost surely, 2^{20100220000121} is an apocalyptic number.

It is an amenable number.

20100220000121 is a deficient number, since it is larger than the sum of its proper divisors (470446792423).

20100220000121 is an equidigital number, since it uses as much as digits as its factorization.

20100220000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68177671.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20100220000121 its reverse (12100002200102), we get a palindrome (32200222200223).

The spelling of 20100220000121 in words is "twenty trillion, one hundred billion, two hundred twenty million, one hundred twenty-one", and thus it is an aban number.