10121211020121 has 8 divisors (see below), whose sum is σ = 13494962992320. Its totient is φ = 6747466530672.

The previous prime is 10121211020071. The next prime is 10121211020191. The reversal of 10121211020121 is 12102011212101.

It is a happy number.

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

It is not a de Polignac number, because 10121211020121 - 2³⁵ = 10086851281753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10121211020121.

It is not an unprimeable number, because it can be changed into a prime (10121211020191) 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, 3435675 + ... + 5660943.

It is an arithmetic number, because the mean of its divisors is an integer number (1686870374040).

Almost surely, 2^{10121211020121} is an apocalyptic number.

It is an amenable number.

10121211020121 is a deficient number, since it is larger than the sum of its proper divisors (3373751972199).

10121211020121 is a wasteful number, since it uses less digits than its factorization.

10121211020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3741375.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 10121211020121 its reverse (12102011212101), we get a palindrome (22223222232222).

The spelling of 10121211020121 in words is "ten trillion, one hundred twenty-one billion, two hundred eleven million, twenty thousand, one hundred twenty-one".