51121234012 has 12 divisors (see below), whose sum is σ = 90594592480. Its totient is φ = 25237064736.

The previous prime is 51121233913. The next prime is 51121234033. The reversal of 51121234012 is 21043212115.

It is a super-2 number, since 2×51121234012² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80887713 + ... + 80888344.

Almost surely, 2^51121234012 is an apocalyptic number.

It is an amenable number.

51121234012 is a deficient number, since it is larger than the sum of its proper divisors (39473358468).

51121234012 is a wasteful number, since it uses less digits than its factorization.

51121234012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161776140 (or 161776138 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 51121234012 its reverse (21043212115), we get a palindrome (72164446127).

The spelling of 51121234012 in words is "fifty-one billion, one hundred twenty-one million, two hundred thirty-four thousand, twelve".