1100120011212 has 48 divisors (see below), whose sum is σ = 2791401510240. Its totient is φ = 335807695872.

The previous prime is 1100120011189. The next prime is 1100120011219. The reversal of 1100120011212 is 2121100210011.

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

It is not an unprimeable number, because it can be changed into a prime (1100120011219) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 72867387 + ... + 72882482.

It is an arithmetic number, because the mean of its divisors is an integer number (58154198130).

Almost surely, 2^{1100120011212} is an apocalyptic number.

1100120011212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1100120011212 is an abundant number, since it is smaller than the sum of its proper divisors (1691281499028).

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

1100120011212 is a wasteful number, since it uses less digits than its factorization.

1100120011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145749930 (or 145749928 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1100120011212 its reverse (2121100210011), we get a palindrome (3221220221223).

The spelling of 1100120011212 in words is "one trillion, one hundred billion, one hundred twenty million, eleven thousand, two hundred twelve".