1100120022120 has 128 divisors (see below), whose sum is σ = 3775544524800. Its totient is φ = 251209042176.

The previous prime is 1100120022091. The next prime is 1100120022139. The reversal of 1100120022120 is 212200210011.

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

It is a junction number, because it is equal to n+sod(n) for n = 1100120022096 and 1100120022105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 213337 + ... + 1498583.

It is an arithmetic number, because the mean of its divisors is an integer number (29496441600).

Almost surely, 2^{1100120022120} is an apocalyptic number.

1100120022120 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 1100120022120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1887772262400).

1100120022120 is an abundant number, since it is smaller than the sum of its proper divisors (2675424502680).

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

1100120022120 is a wasteful number, since it uses less digits than its factorization.

1100120022120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286287 (or 1286283 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1100120022120 its reverse (212200210011), we get a palindrome (1312320232131).

The spelling of 1100120022120 in words is "one trillion, one hundred billion, one hundred twenty million, twenty-two thousand, one hundred twenty".