1121112220100 has 72 divisors (see below), whose sum is σ = 2458266910848. Its totient is φ = 443762300800.

The previous prime is 1121112220031. The next prime is 1121112220127. The reversal of 1121112220100 is 10222111211.

It is a super-2 number, since 2×1121112220100² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9690194 + ... + 9805206.

It is an arithmetic number, because the mean of its divisors is an integer number (34142595984).

Almost surely, 2^{1121112220100} is an apocalyptic number.

1121112220100 is a gapful number since it is divisible by the number (10) 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 1121112220100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1229133455424).

1121112220100 is an abundant number, since it is smaller than the sum of its proper divisors (1337154690748).

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

1121112220100 is a wasteful number, since it uses less digits than its factorization.

1121112220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116045 (or 116038 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1121112220100 its reverse (10222111211), we get a palindrome (1131334331311).

The spelling of 1121112220100 in words is "one trillion, one hundred twenty-one billion, one hundred twelve million, two hundred twenty thousand, one hundred".