11011002020 has 12 divisors (see below), whose sum is σ = 23123104284. Its totient is φ = 4404400800.

The previous prime is 11011002019. The next prime is 11011002031. The reversal of 11011002020 is 2020011011.

It can be written as a sum of positive squares in 2 ways, for example, as 5491106404 + 5519895616 = 74102^2 + 74296^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11011001989 and 11011002007.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275275031 + ... + 275275070.

It is an arithmetic number, because the mean of its divisors is an integer number (1926925357).

Almost surely, 2^11011002020 is an apocalyptic number.

11011002020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11011002020 is an abundant number, since it is smaller than the sum of its proper divisors (12112102264).

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

11011002020 is a wasteful number, since it uses less digits than its factorization.

11011002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550550110 (or 550550108 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 11011002020 its reverse (2020011011), we get a palindrome (13031013031).

The spelling of 11011002020 in words is "eleven billion, eleven million, two thousand, twenty".