11100211020 has 72 divisors (see below), whose sum is σ = 33683133120. Its totient is φ = 2958958080.

The previous prime is 11100211009. The next prime is 11100211039. The reversal of 11100211020 is 2011200111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 11100210993 and 11100211011.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 551901 + ... + 571659.

Almost surely, 2^11100211020 is an apocalyptic number.

11100211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11100211020 is an abundant number, since it is smaller than the sum of its proper divisors (22582922100).

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

11100211020 is a wasteful number, since it uses less digits than its factorization.

11100211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22895 (or 22890 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11100211020 its reverse (2011200111), we get a palindrome (13111411131).

The spelling of 11100211020 in words is "eleven billion, one hundred million, two hundred eleven thousand, twenty".