1100203003020 has 96 divisors (see below), whose sum is σ = 3360853762560. Its totient is φ = 266697333760.

The previous prime is 1100203002991. The next prime is 1100203003033. The reversal of 1100203003020 is 203003020011.

It is a happy number.

It is a super-2 number, since 2×1100203003020² (a number of 25 digits) contains 22 as substring.

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 = 1100203002987 and 1100203003005.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11053636 + ... + 11152724.

It is an arithmetic number, because the mean of its divisors is an integer number (35008893360).

Almost surely, 2^{1100203003020} is an apocalyptic number.

1100203003020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100203003020 is an abundant number, since it is smaller than the sum of its proper divisors (2260650759540).

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

1100203003020 is a wasteful number, since it uses less digits than its factorization.

1100203003020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115935 (or 115933 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 1100203003020 its reverse (203003020011), we get a palindrome (1303206023031).

The spelling of 1100203003020 in words is "one trillion, one hundred billion, two hundred three million, three thousand, twenty".