51116122001 has 16 divisors (see below), whose sum is σ = 61729996800. Its totient is φ = 41378367888.

The previous prime is 51116121997. The next prime is 51116122061. The reversal of 51116122001 is 10022161115.

It is a cyclic number.

It is not a de Polignac number, because 51116122001 - 2² = 51116121997 is a prime.

It is a super-2 number, since 2×51116122001² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51116122061) 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 15 ways as a sum of consecutive naturals, for example, 1996721 + ... + 2022158.

It is an arithmetic number, because the mean of its divisors is an integer number (3858124800).

Almost surely, 2^51116122001 is an apocalyptic number.

It is an amenable number.

51116122001 is a deficient number, since it is larger than the sum of its proper divisors (10613874799).

51116122001 is a wasteful number, since it uses less digits than its factorization.

51116122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4018988.

The product of its (nonzero) digits is 120, while the sum is 20.

Adding to 51116122001 its reverse (10022161115), we get a palindrome (61138283116).

The spelling of 51116122001 in words is "fifty-one billion, one hundred sixteen million, one hundred twenty-two thousand, one".