11021440020 has 48 divisors (see below), whose sum is σ = 30869301120. Its totient is φ = 2938167936.

The previous prime is 11021439997. The next prime is 11021440033. The reversal of 11021440020 is 2004412011.

It is a super-2 number, since 2×11021440020² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187734 + ... + 239346.

It is an arithmetic number, because the mean of its divisors is an integer number (643110440).

Almost surely, 2^11021440020 is an apocalyptic number.

11021440020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11021440020 is an abundant number, since it is smaller than the sum of its proper divisors (19847861100).

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

11021440020 is a wasteful number, since it uses less digits than its factorization.

11021440020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55184 (or 55182 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 11021440020 its reverse (2004412011), we get a palindrome (13025852031).

The spelling of 11021440020 in words is "eleven billion, twenty-one million, four hundred forty thousand, twenty".