1100121110220 has 96 divisors (see below), whose sum is σ = 3393641131776. Its totient is φ = 264055456000.

The previous prime is 1100121110203. The next prime is 1100121110227. The reversal of 1100121110220 is 220111210011.

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 = 1100121110196 and 1100121110205.

It is not an unprimeable number, because it can be changed into a prime (1100121110227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8185074 + ... + 8318393.

It is an arithmetic number, because the mean of its divisors is an integer number (35350428456).

Almost surely, 2^{1100121110220} is an apocalyptic number.

1100121110220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100121110220 is an abundant number, since it is smaller than the sum of its proper divisors (2293520021556).

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

1100121110220 is a wasteful number, since it uses less digits than its factorization.

1100121110220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16503591 (or 16503589 counting only the distinct ones).

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

Adding to 1100121110220 its reverse (220111210011), we get a palindrome (1320232320231).

The spelling of 1100121110220 in words is "one trillion, one hundred billion, one hundred twenty-one million, one hundred ten thousand, two hundred twenty".