20111102211112 has 32 divisors (see below), whose sum is σ = 41260624480800. Its totient is φ = 9113792529600.

The previous prime is 20111102211059. The next prime is 20111102211121. The reversal of 20111102211112 is 21111220111102.

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, 345190287 + ... + 345248542.

It is an arithmetic number, because the mean of its divisors is an integer number (1289394515025).

Almost surely, 2^{20111102211112} is an apocalyptic number.

20111102211112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20111102211112 is an abundant number, since it is smaller than the sum of its proper divisors (21149522269688).

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

20111102211112 is a wasteful number, since it uses less digits than its factorization.

20111102211112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690439177 (or 690439173 counting only the distinct ones).

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

Adding to 20111102211112 its reverse (21111220111102), we get a palindrome (41222322322214).

It can be divided in two parts, 20111102 and 211112, that multiplied together give a palindrome (4245694965424).

The spelling of 20111102211112 in words is "twenty trillion, one hundred eleven billion, one hundred two million, two hundred eleven thousand, one hundred twelve".