51050121229 has 2 divisors, whose sum is σ = 51050121230. Its totient is φ = 51050121228.

The previous prime is 51050121209. The next prime is 51050121281. The reversal of 51050121229 is 92212105015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49403952900 + 1646168329 = 222270^2 + 40573^2 .

It is a cyclic number.

It is not a de Polignac number, because 51050121229 - 2⁹ = 51050120717 is a prime.

It is a super-2 number, since 2×51050121229² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51050121197 and 51050121206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51050121209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25525060614 + 25525060615.

It is an arithmetic number, because the mean of its divisors is an integer number (25525060615).

Almost surely, 2^51050121229 is an apocalyptic number.

It is an amenable number.

51050121229 is a deficient number, since it is larger than the sum of its proper divisors (1).

51050121229 is an equidigital number, since it uses as much as digits as its factorization.

51050121229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 28.

The spelling of 51050121229 in words is "fifty-one billion, fifty million, one hundred twenty-one thousand, two hundred twenty-nine".