10121212020121 has 4 divisors (see below), whose sum is σ = 10561264716672. Its totient is φ = 9681159323572.

The previous prime is 10121212020109. The next prime is 10121212020173. The reversal of 10121212020121 is 12102021212101.

10121212020121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10121212020121 - 2¹⁵ = 10121211987353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10121212020095 and 10121212020104.

It is not an unprimeable number, because it can be changed into a prime (10121212020221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220026348241 + ... + 220026348286.

It is an arithmetic number, because the mean of its divisors is an integer number (2640316179168).

Almost surely, 2^{10121212020121} is an apocalyptic number.

It is an amenable number.

10121212020121 is a deficient number, since it is larger than the sum of its proper divisors (440052696551).

10121212020121 is an equidigital number, since it uses as much as digits as its factorization.

10121212020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440052696550.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10121212020121 its reverse (12102021212101), we get a palindrome (22223233232222).

The spelling of 10121212020121 in words is "ten trillion, one hundred twenty-one billion, two hundred twelve million, twenty thousand, one hundred twenty-one".