1101221111112 has 192 divisors, whose sum is σ = 3034582704000. Its totient is φ = 332340738048.

The previous prime is 1101221111099. The next prime is 1101221111147. The reversal of 1101221111112 is 2111111221011.

It is a junction number, because it is equal to n+sod(n) for n = 1101221111091 and 1101221111100.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 356496064 + ... + 356499152.

It is an arithmetic number, because the mean of its divisors is an integer number (15805118250).

Almost surely, 2^{1101221111112} is an apocalyptic number.

1101221111112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1101221111112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1517291352000).

1101221111112 is an abundant number, since it is smaller than the sum of its proper divisors (1933361592888).

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

1101221111112 is a wasteful number, since it uses less digits than its factorization.

1101221111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4948 (or 4925 counting only the distinct ones).

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

Adding to 1101221111112 its reverse (2111111221011), we get a palindrome (3212332332123).

The spelling of 1101221111112 in words is "one trillion, one hundred one billion, two hundred twenty-one million, one hundred eleven thousand, one hundred twelve".