11102102020 has 24 divisors (see below), whose sum is σ = 23554773144. Its totient is φ = 4395058176.

The previous prime is 11102102009. The next prime is 11102102027. The reversal of 11102102020 is 2020120111.

It can be written as a sum of positive squares in 4 ways, for example, as 3777823296 + 7324278724 = 61464^2 + 85582^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 11102101988 and 11102102006.

It is not an unprimeable number, because it can be changed into a prime (11102102027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2859427 + ... + 2863306.

It is an arithmetic number, because the mean of its divisors is an integer number (981448881).

Almost surely, 2^11102102020 is an apocalyptic number.

11102102020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11102102020 is an abundant number, since it is smaller than the sum of its proper divisors (12452671124).

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

11102102020 is a wasteful number, since it uses less digits than its factorization.

11102102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5722839 (or 5722837 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 11102102020 its reverse (2020120111), we get a palindrome (13122222131).

The spelling of 11102102020 in words is "eleven billion, one hundred two million, one hundred two thousand, twenty".