1100021111112 has 512 divisors, whose sum is σ = 3570206699520. Its totient is φ = 274226135040.

The previous prime is 1100021111093. The next prime is 1100021111131. The reversal of 1100021111112 is 2111111200011.

It is an interprime number because it is at equal distance from previous prime (1100021111093) and next prime (1100021111131).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 979537383 + ... + 979538505.

It is an arithmetic number, because the mean of its divisors is an integer number (6973059960).

Almost surely, 2^{1100021111112} is an apocalyptic number.

1100021111112 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 1100021111112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1785103349760).

1100021111112 is an abundant number, since it is smaller than the sum of its proper divisors (2470185588408).

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

1100021111112 is a wasteful number, since it uses less digits than its factorization.

1100021111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1413 (or 1409 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1100021111112 its reverse (2111111200011), we get a palindrome (3211132311123).

It can be divided in two parts, 11000 and 21111112, that added together give a palindrome (21122112).

The spelling of 1100021111112 in words is "one trillion, one hundred billion, twenty-one million, one hundred eleven thousand, one hundred twelve".