51170022212 has 12 divisors (see below), whose sum is σ = 89564596716. Its totient is φ = 25580137440.

The previous prime is 51170022199. The next prime is 51170022217. The reversal of 51170022212 is 21222007115.

It can be written as a sum of positive squares in 2 ways, for example, as 33527807236 + 17642214976 = 183106^2 + 132824^2 .

It is a super-3 number, since 3×51170022212³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (51170022217) 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 3 ways as a sum of consecutive naturals, for example, 1194743 + ... + 1236830.

It is an arithmetic number, because the mean of its divisors is an integer number (7463716393).

Almost surely, 2^51170022212 is an apocalyptic number.

It is an amenable number.

51170022212 is a deficient number, since it is larger than the sum of its proper divisors (38394574504).

51170022212 is a wasteful number, since it uses less digits than its factorization.

51170022212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2436838 (or 2436836 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 23.

Adding to 51170022212 its reverse (21222007115), we get a palindrome (72392029327).

The spelling of 51170022212 in words is "fifty-one billion, one hundred seventy million, twenty-two thousand, two hundred twelve".