11211220111112 has 16 divisors (see below), whose sum is σ = 24024043095360. Its totient is φ = 4804808619024.

The previous prime is 11211220111103. The next prime is 11211220111127. The reversal of 11211220111112 is 21111102211211.

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, 100100179508 + ... + 100100179619.

It is an arithmetic number, because the mean of its divisors is an integer number (1501502693460).

Almost surely, 2^{11211220111112} is an apocalyptic number.

It is an amenable number.

11211220111112 is an abundant number, since it is smaller than the sum of its proper divisors (12812822984248).

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

11211220111112 is a wasteful number, since it uses less digits than its factorization.

11211220111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200200359140 (or 200200359136 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 11211220111112 its reverse (21111102211211), we get a palindrome (32322322322323).

The spelling of 11211220111112 in words is "eleven trillion, two hundred eleven billion, two hundred twenty million, one hundred eleven thousand, one hundred twelve".