11102021020 has 24 divisors (see below), whose sum is σ = 24685671024. Its totient is φ = 4179584256.

The previous prime is 11102020999. The next prime is 11102021023. The reversal of 11102021020 is 2012020111.

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 = 11102020988 and 11102021006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11102021023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16326162 + ... + 16326841.

It is an arithmetic number, because the mean of its divisors is an integer number (1028569626).

Almost surely, 2^11102021020 is an apocalyptic number.

11102021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11102021020 is an abundant number, since it is smaller than the sum of its proper divisors (13583650004).

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

11102021020 is a wasteful number, since it uses less digits than its factorization.

11102021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32653029 (or 32653027 counting only the distinct ones).

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

Adding to 11102021020 its reverse (2012020111), we get a palindrome (13114041131).

Subtracting from 11102021020 its reverse (2012020111), we obtain a palindrome (9090000909).

The spelling of 11102021020 in words is "eleven billion, one hundred two million, twenty-one thousand, twenty".