1100120102020 has 24 divisors (see below), whose sum is σ = 2311616876184. Its totient is φ = 439788105216.

The previous prime is 1100120101991. The next prime is 1100120102027. The reversal of 1100120102020 is 202010210011.

It can be written as a sum of positive squares in 4 ways, for example, as 8880800644 + 1091239301376 = 94238^2 + 1044624^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1100120101988 and 1100120102006.

It is not an unprimeable number, because it can be changed into a prime (1100120102027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16211269 + ... + 16278988.

It is an arithmetic number, because the mean of its divisors is an integer number (96317369841).

Almost surely, 2^{1100120102020} is an apocalyptic number.

1100120102020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100120102020 is an abundant number, since it is smaller than the sum of its proper divisors (1211496774164).

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

1100120102020 is a wasteful number, since it uses less digits than its factorization.

1100120102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32491959 (or 32491957 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1100120102020 its reverse (202010210011), we get a palindrome (1302130312031).

The spelling of 1100120102020 in words is "one trillion, one hundred billion, one hundred twenty million, one hundred two thousand, twenty".