11020221221020 has 24 divisors (see below), whose sum is σ = 25246324979568. Its totient is φ = 4007353171200.

The previous prime is 11020221220969. The next prime is 11020221221021. The reversal of 11020221221020 is 2012212202011.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11020221220985 and 11020221221003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11020221221021) 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, 25045957101 + ... + 25045957540.

It is an arithmetic number, because the mean of its divisors is an integer number (1051930207482).

Almost surely, 2^{11020221221020} is an apocalyptic number.

11020221221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11020221221020 is an abundant number, since it is smaller than the sum of its proper divisors (14226103758548).

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

11020221221020 is a wasteful number, since it uses less digits than its factorization.

11020221221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50091914661 (or 50091914659 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11020221221020 its reverse (2012212202011), we get a palindrome (13032433423031).

The spelling of 11020221221020 in words is "eleven trillion, twenty billion, two hundred twenty-one million, two hundred twenty-one thousand, twenty".