1101111221112 has 64 divisors (see below), whose sum is σ = 3156083431680. Its totient is φ = 313598068992.

The previous prime is 1101111221069. The next prime is 1101111221113. The reversal of 1101111221112 is 2111221111011.

It is a junction number, because it is equal to n+sod(n) for n = 1101111221091 and 1101111221100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101111221113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10417438 + ... + 10522605.

It is an arithmetic number, because the mean of its divisors is an integer number (49313803620).

Almost surely, 2^{1101111221112} is an apocalyptic number.

1101111221112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1101111221112 is an abundant number, since it is smaller than the sum of its proper divisors (2054972210568).

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

1101111221112 is a wasteful number, since it uses less digits than its factorization.

1101111221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20940372 (or 20940368 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 1101111221112 its reverse (2111221111011), we get a palindrome (3212332332123).

The spelling of 1101111221112 in words is "one trillion, one hundred one billion, one hundred eleven million, two hundred twenty-one thousand, one hundred twelve".