1100300021220 has 96 divisors (see below), whose sum is σ = 3262726051200. Its totient is φ = 276097849344.

The previous prime is 1100300021209. The next prime is 1100300021221. The reversal of 1100300021220 is 221200030011.

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 = 1100300021196 and 1100300021205.

It is not an unprimeable number, because it can be changed into a prime (1100300021221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5053566 + ... + 5266794.

It is an arithmetic number, because the mean of its divisors is an integer number (33986729700).

Almost surely, 2^{1100300021220} is an apocalyptic number.

1100300021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100300021220 is an abundant number, since it is smaller than the sum of its proper divisors (2162426029980).

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

1100300021220 is a wasteful number, since it uses less digits than its factorization.

1100300021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218317 (or 218315 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 1100300021220 its reverse (221200030011), we get a palindrome (1321500051231).

The spelling of 1100300021220 in words is "one trillion, one hundred billion, three hundred million, twenty-one thousand, two hundred twenty".