51102302122 has 4 divisors (see below), whose sum is σ = 76653453186. Its totient is φ = 25551151060.

The previous prime is 51102302117. The next prime is 51102302123. The reversal of 51102302122 is 22120320115.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 49889242881 + 1213059241 = 223359^2 + 34829^2 .

It is a super-2 number, since 2×51102302122² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51102302122.

It is not an unprimeable number, because it can be changed into a prime (51102302123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12775575529 + ... + 12775575532.

Almost surely, 2^51102302122 is an apocalyptic number.

51102302122 is a deficient number, since it is larger than the sum of its proper divisors (25551151064).

51102302122 is a wasteful number, since it uses less digits than its factorization.

51102302122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25551151063.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 51102302122 its reverse (22120320115), we get a palindrome (73222622237).

The spelling of 51102302122 in words is "fifty-one billion, one hundred two million, three hundred two thousand, one hundred twenty-two".