11220221020 has 12 divisors (see below), whose sum is σ = 23562464184. Its totient is φ = 4488088400.

The previous prime is 11220220981. The next prime is 11220221059. The reversal of 11220221020 is 2012202211.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11220220981) and next prime (11220221059).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 280505506 + ... + 280505545.

It is an arithmetic number, because the mean of its divisors is an integer number (1963538682).

Almost surely, 2^11220221020 is an apocalyptic number.

11220221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11220221020 is an abundant number, since it is smaller than the sum of its proper divisors (12342243164).

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

11220221020 is a wasteful number, since it uses less digits than its factorization.

11220221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561011060 (or 561011058 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 11220221020 its reverse (2012202211), we get a palindrome (13232423231).

The spelling of 11220221020 in words is "eleven billion, two hundred twenty million, two hundred twenty-one thousand, twenty".