1100200121220 has 24 divisors (see below), whose sum is σ = 3080560339584. Its totient is φ = 293386698976.

The previous prime is 1100200121173. The next prime is 1100200121243. The reversal of 1100200121220 is 221210020011.

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 = 1100200121196 and 1100200121205.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9168334284 + ... + 9168334403.

It is an arithmetic number, because the mean of its divisors is an integer number (128356680816).

Almost surely, 2^{1100200121220} is an apocalyptic number.

1100200121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100200121220 is an abundant number, since it is smaller than the sum of its proper divisors (1980360218364).

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

1100200121220 is a wasteful number, since it uses less digits than its factorization.

1100200121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18336668699 (or 18336668697 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1100200121220 its reverse (221210020011), we get a palindrome (1321410141231).

The spelling of 1100200121220 in words is "one trillion, one hundred billion, two hundred million, one hundred twenty-one thousand, two hundred twenty".