20120112202112 has 64 divisors (see below), whose sum is σ = 43172288174400. Its totient is φ = 9284927422464.

The previous prime is 20120112202049. The next prime is 20120112202163. The reversal of 20120112202112 is 21120221102102.

It is a tau number, because it is divible by the number of its divisors (64).

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, 11313689 + ... + 12970727.

It is an arithmetic number, because the mean of its divisors is an integer number (674567002725).

Almost surely, 2^{20120112202112} is an apocalyptic number.

It is an amenable number.

20120112202112 is an abundant number, since it is smaller than the sum of its proper divisors (23052175972288).

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

20120112202112 is a wasteful number, since it uses less digits than its factorization.

20120112202112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664363 (or 1664351 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20120112202112 its reverse (21120221102102), we get a palindrome (41240333304214).

The spelling of 20120112202112 in words is "twenty trillion, one hundred twenty billion, one hundred twelve million, two hundred two thousand, one hundred twelve".