51121022041 has 2 divisors, whose sum is σ = 51121022042. Its totient is φ = 51121022040.

The previous prime is 51121022039. The next prime is 51121022101. The reversal of 51121022041 is 14022012115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50908445641 + 212576400 = 225629^2 + 14580^2 .

It is a cyclic number.

It is not a de Polignac number, because 51121022041 - 2¹ = 51121022039 is a prime.

It is a super-2 number, since 2×51121022041² (a number of 22 digits) contains 22 as substring.

Together with 51121022039, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (51121022341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25560511020 + 25560511021.

It is an arithmetic number, because the mean of its divisors is an integer number (25560511021).

Almost surely, 2^51121022041 is an apocalyptic number.

It is an amenable number.

51121022041 is a deficient number, since it is larger than the sum of its proper divisors (1).

51121022041 is an equidigital number, since it uses as much as digits as its factorization.

51121022041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 51121022041 its reverse (14022012115), we get a palindrome (65143034156).

The spelling of 51121022041 in words is "fifty-one billion, one hundred twenty-one million, twenty-two thousand, forty-one".