51122102222 has 16 divisors (see below), whose sum is σ = 79547832000. Its totient is φ = 24621941760.

The previous prime is 51122102179. The next prime is 51122102249. The reversal of 51122102222 is 22220122115.

It is a super-2 number, since 2×51122102222² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51122102194 and 51122102203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3939347 + ... + 3952302.

It is an arithmetic number, because the mean of its divisors is an integer number (4971739500).

Almost surely, 2^51122102222 is an apocalyptic number.

51122102222 is a deficient number, since it is larger than the sum of its proper divisors (28425729778).

51122102222 is a wasteful number, since it uses less digits than its factorization.

51122102222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7891771.

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 51122102222 its reverse (22220122115), we get a palindrome (73342224337).

The spelling of 51122102222 in words is "fifty-one billion, one hundred twenty-two million, one hundred two thousand, two hundred twenty-two".