51241222111 has 2 divisors, whose sum is σ = 51241222112. Its totient is φ = 51241222110.

The previous prime is 51241222093. The next prime is 51241222117. The reversal of 51241222111 is 11122214215.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51241222111 - 2¹⁵ = 51241189343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51241222117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25620611055 + 25620611056.

It is an arithmetic number, because the mean of its divisors is an integer number (25620611056).

Almost surely, 2^51241222111 is an apocalyptic number.

51241222111 is a deficient number, since it is larger than the sum of its proper divisors (1).

51241222111 is an equidigital number, since it uses as much as digits as its factorization.

51241222111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 320, while the sum is 22.

Adding to 51241222111 its reverse (11122214215), we get a palindrome (62363436326).

The spelling of 51241222111 in words is "fifty-one billion, two hundred forty-one million, two hundred twenty-two thousand, one hundred eleven".