11112120401 has 2 divisors, whose sum is σ = 11112120402. Its totient is φ = 11112120400.

The previous prime is 11112120391. The next prime is 11112120403. The reversal of 11112120401 is 10402121111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6031852225 + 5080268176 = 77665^2 + 71276^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11112120401 is a prime.

Together with 11112120403, 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 (11112120403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556060200 + 5556060201.

It is an arithmetic number, because the mean of its divisors is an integer number (5556060201).

Almost surely, 2^11112120401 is an apocalyptic number.

It is an amenable number.

11112120401 is a deficient number, since it is larger than the sum of its proper divisors (1).

11112120401 is an equidigital number, since it uses as much as digits as its factorization.

11112120401 is an odious number, because the sum of its binary digits is odd.

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

Adding to 11112120401 its reverse (10402121111), we get a palindrome (21514241512).

The spelling of 11112120401 in words is "eleven billion, one hundred twelve million, one hundred twenty thousand, four hundred one".