1100202020 has 48 divisors (see below), whose sum is σ = 2336947200. Its totient is φ = 435060480.

The previous prime is 1100202007. The next prime is 1100202023. The reversal of 1100202020 is 202020011.

1100202020 is a modest number, since divided by 202020 gives 1100 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 1100201989 and 1100202007.

It is not an unprimeable number, because it can be changed into a prime (1100202023) 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, 682976 + ... + 684584.

It is an arithmetic number, because the mean of its divisors is an integer number (48686400).

Almost surely, 2^1100202020 is an apocalyptic number.

1100202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100202020 is an abundant number, since it is smaller than the sum of its proper divisors (1236745180).

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

1100202020 is a wasteful number, since it uses less digits than its factorization.

1100202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1988 (or 1986 counting only the distinct ones).

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

The square root of 1100202020 is about 33169.2933298254. The cubic root of 1100202020 is about 1032.3433058999.

Adding to 1100202020 its reverse (202020011), we get a palindrome (1302222031).

The spelling of 1100202020 in words is "one billion, one hundred million, two hundred two thousand, twenty".