10121422391 has 2 divisors, whose sum is σ = 10121422392. Its totient is φ = 10121422390.

The previous prime is 10121422331. The next prime is 10121422433. The reversal of 10121422391 is 19322412101.

10121422391 is digitally balanced in base 2, 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 a de Polignac number, because none of the positive numbers 2^k-10121422391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10121422391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10121422331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060711195 + 5060711196.

It is an arithmetic number, because the mean of its divisors is an integer number (5060711196).

Almost surely, 2^10121422391 is an apocalyptic number.

10121422391 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121422391 is an equidigital number, since it uses as much as digits as its factorization.

10121422391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

Adding to 10121422391 its reverse (19322412101), we get a palindrome (29443834492).

The spelling of 10121422391 in words is "ten billion, one hundred twenty-one million, four hundred twenty-two thousand, three hundred ninety-one".