20120011111112 has 16 divisors (see below), whose sum is σ = 41154568182000. Its totient is φ = 9145459595920.

The previous prime is 20120011111111. The next prime is 20120011111117. The reversal of 20120011111112 is 21111111002102.

It is a super-2 number, since 2×20120011111112² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20120011111111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114318244862 + ... + 114318245037.

It is an arithmetic number, because the mean of its divisors is an integer number (2572160511375).

Almost surely, 2^{20120011111112} is an apocalyptic number.

20120011111112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20120011111112 is an abundant number, since it is smaller than the sum of its proper divisors (21034557070888).

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

20120011111112 is a wasteful number, since it uses less digits than its factorization.

20120011111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228636489916 (or 228636489912 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 20120011111112 its reverse (21111111002102), we get a palindrome (41231122113214).

The spelling of 20120011111112 in words is "twenty trillion, one hundred twenty billion, eleven million, one hundred eleven thousand, one hundred twelve".