51212114021 has 8 divisors (see below), whose sum is σ = 51555075264. Its totient is φ = 50870276320.

The previous prime is 51212114017. The next prime is 51212114027. The reversal of 51212114021 is 12041121215.

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 51212114021 - 2² = 51212114017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51212113984 and 51212114002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51212114027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189320 + ... + 371841.

It is an arithmetic number, because the mean of its divisors is an integer number (6444384408).

Almost surely, 2^51212114021 is an apocalyptic number.

It is an amenable number.

51212114021 is a deficient number, since it is larger than the sum of its proper divisors (342961243).

51212114021 is a wasteful number, since it uses less digits than its factorization.

51212114021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561771.

The product of its (nonzero) digits is 160, while the sum is 20.

Adding to 51212114021 its reverse (12041121215), we get a palindrome (63253235236).

The spelling of 51212114021 in words is "fifty-one billion, two hundred twelve million, one hundred fourteen thousand, twenty-one".