110101202020121 has 4 divisors (see below), whose sum is σ = 118570525252452. Its totient is φ = 101631878787792.

The previous prime is 110101202020039. The next prime is 110101202020169. The reversal of 110101202020121 is 121020202101011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32228272230025 + 77872929790096 = 5676995^2 + 8824564^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110101202020121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 110101202020096 and 110101202020105.

It is not an unprimeable number, because it can be changed into a prime (110101202020181) 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, 4234661616146 + ... + 4234661616171.

It is an arithmetic number, because the mean of its divisors is an integer number (29642631313113).

Almost surely, 2^{110101202020121} is an apocalyptic number.

It is an amenable number.

110101202020121 is a deficient number, since it is larger than the sum of its proper divisors (8469323232331).

110101202020121 is an equidigital number, since it uses as much as digits as its factorization.

110101202020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8469323232330.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 110101202020121 its reverse (121020202101011), we get a palindrome (231121404121132).

The spelling of 110101202020121 in words is "one hundred ten trillion, one hundred one billion, two hundred two million, twenty thousand, one hundred twenty-one".