10000111120121 has 2 divisors, whose sum is σ = 10000111120122. Its totient is φ = 10000111120120.

The previous prime is 10000111120067. The next prime is 10000111120123. The reversal of 10000111120121 is 12102111100001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8012183136400 + 1987927983721 = 2830580^2 + 1409939^2 .

It is a cyclic number.

It is not a de Polignac number, because 10000111120121 - 2²⁶ = 10000044011257 is a prime.

Together with 10000111120123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (10000111120123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000055560060 + 5000055560061.

It is an arithmetic number, because the mean of its divisors is an integer number (5000055560061).

Almost surely, 2^{10000111120121} is an apocalyptic number.

It is an amenable number.

10000111120121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10000111120121 is an equidigital number, since it uses as much as digits as its factorization.

10000111120121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 10000111120121 its reverse (12102111100001), we get a palindrome (22102222220122).

The spelling of 10000111120121 in words is "ten trillion, one hundred eleven million, one hundred twenty thousand, one hundred twenty-one".