51111100100122 has 8 divisors (see below), whose sum is σ = 76762844192916. Its totient is φ = 25523485369152.

The previous prime is 51111100100111. The next prime is 51111100100131. The reversal of 51111100100122 is 22100100111115.

It can be written as a sum of positive squares in 2 ways, for example, as 50747115937401 + 363984162721 = 7123701^2 + 603311^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×51111100100122² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51111100100096 and 51111100100105.

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, 16032338463 + ... + 16032341650.

Almost surely, 2^{51111100100122} is an apocalyptic number.

51111100100122 is a deficient number, since it is larger than the sum of its proper divisors (25651744092794).

51111100100122 is a wasteful number, since it uses less digits than its factorization.

51111100100122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32064680912.

The product of its (nonzero) digits is 20, while the sum is 16.

Adding to 51111100100122 its reverse (22100100111115), we get a palindrome (73211200211237).

The spelling of 51111100100122 in words is "fifty-one trillion, one hundred eleven billion, one hundred million, one hundred thousand, one hundred twenty-two".