101111113330421 has 2 divisors, whose sum is σ = 101111113330422. Its totient is φ = 101111113330420.

The previous prime is 101111113330417. The next prime is 101111113330459. The reversal of 101111113330421 is 124033311111101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101100792802321 + 10320528100 = 10054889^2 + 101590^2 .

It is a cyclic number.

It is not a de Polignac number, because 101111113330421 - 2² = 101111113330417 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101111113330021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50555556665210 + 50555556665211.

It is an arithmetic number, because the mean of its divisors is an integer number (50555556665211).

Almost surely, 2^{101111113330421} is an apocalyptic number.

It is an amenable number.

101111113330421 is a deficient number, since it is larger than the sum of its proper divisors (1).

101111113330421 is an equidigital number, since it uses as much as digits as its factorization.

101111113330421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 101111113330421 its reverse (124033311111101), we get a palindrome (225144424441522).

The spelling of 101111113330421 in words is "one hundred one trillion, one hundred eleven billion, one hundred thirteen million, three hundred thirty thousand, four hundred twenty-one".