1100202121220 has 48 divisors (see below), whose sum is σ = 2430604411200. Its totient is φ = 417703843200.

The previous prime is 1100202121199. The next prime is 1100202121223. The reversal of 1100202121220 is 221212020011.

It is a junction number, because it is equal to n+sod(n) for n = 1100202121195 and 1100202121204.

It is not an unprimeable number, because it can be changed into a prime (1100202121223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16041206 + ... + 16109645.

It is an arithmetic number, because the mean of its divisors is an integer number (50637591900).

Almost surely, 2^{1100202121220} is an apocalyptic number.

1100202121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100202121220 is an abundant number, since it is smaller than the sum of its proper divisors (1330402289980).

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

1100202121220 is a wasteful number, since it uses less digits than its factorization.

1100202121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32150948 (or 32150946 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1100202121220 its reverse (221212020011), we get a palindrome (1321414141231).

The spelling of 1100202121220 in words is "one trillion, one hundred billion, two hundred two million, one hundred twenty-one thousand, two hundred twenty".