111012122120 has 16 divisors (see below), whose sum is σ = 249777274860. Its totient is φ = 44404848832.

The previous prime is 111012122113. The next prime is 111012122141. The reversal of 111012122120 is 21221210111.

It can be written as a sum of positive squares in 2 ways, for example, as 108450345124 + 2561776996 = 329318^2 + 50614^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111012122095 and 111012122104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1387651487 + ... + 1387651566.

Almost surely, 2^111012122120 is an apocalyptic number.

111012122120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111012122120 is an abundant number, since it is smaller than the sum of its proper divisors (138765152740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111012122120 is a wasteful number, since it uses less digits than its factorization.

111012122120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2775303064 (or 2775303060 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111012122120 its reverse (21221210111), we get a palindrome (132233332231).

The spelling of 111012122120 in words is "one hundred eleven billion, twelve million, one hundred twenty-two thousand, one hundred twenty".