11220022100020 has 12 divisors (see below), whose sum is σ = 23562046410084. Its totient is φ = 4488008840000.

The previous prime is 11220022100003. The next prime is 11220022100029. The reversal of 11220022100020 is 2000122002211.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1170576852624 + 10049445247396 = 1081932^2 + 3170086^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220022100029) 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 3 ways as a sum of consecutive naturals, for example, 280500552481 + ... + 280500552520.

It is an arithmetic number, because the mean of its divisors is an integer number (1963503867507).

Almost surely, 2^{11220022100020} is an apocalyptic number.

11220022100020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11220022100020 is an abundant number, since it is smaller than the sum of its proper divisors (12342024310064).

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

11220022100020 is a wasteful number, since it uses less digits than its factorization.

11220022100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561001105010 (or 561001105008 counting only the distinct ones).

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

Adding to 11220022100020 its reverse (2000122002211), we get a palindrome (13220144102231).

The spelling of 11220022100020 in words is "eleven trillion, two hundred twenty billion, twenty-two million, one hundred thousand, twenty".