51010001121 has 8 divisors (see below), whose sum is σ = 68045932224. Its totient is φ = 33990368720.

The previous prime is 51010001111. The next prime is 51010001177. The reversal of 51010001121 is 12110001015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51010001121 - 2⁶ = 51010001057 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51010001097 and 51010001106.

It is not an unprimeable number, because it can be changed into a prime (51010001111) 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 in 7 ways as a sum of consecutive naturals, for example, 4067370 + ... + 4079891.

It is an arithmetic number, because the mean of its divisors is an integer number (8505741528).

Almost surely, 2^51010001121 is an apocalyptic number.

It is an amenable number.

51010001121 is a deficient number, since it is larger than the sum of its proper divisors (17035931103).

51010001121 is a wasteful number, since it uses less digits than its factorization.

51010001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8149351.

The product of its (nonzero) digits is 10, while the sum is 12.

Adding to 51010001121 its reverse (12110001015), we get a palindrome (63120002136).

The spelling of 51010001121 in words is "fifty-one billion, ten million, one thousand, one hundred twenty-one".