10121200811 has 2 divisors, whose sum is σ = 10121200812. Its totient is φ = 10121200810.

The previous prime is 10121200799. The next prime is 10121200813. The reversal of 10121200811 is 11800212101.

10121200811 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10121200811 - 2²² = 10117006507 is a prime.

Together with 10121200813, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10121200811.

It is not a weakly prime, because it can be changed into another prime (10121200813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060600405 + 5060600406.

It is an arithmetic number, because the mean of its divisors is an integer number (5060600406).

Almost surely, 2^10121200811 is an apocalyptic number.

10121200811 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121200811 is an equidigital number, since it uses as much as digits as its factorization.

10121200811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 10121200811 its reverse (11800212101), we get a palindrome (21921412912).

The spelling of 10121200811 in words is "ten billion, one hundred twenty-one million, two hundred thousand, eight hundred eleven".