11221001111020 has 12 divisors (see below), whose sum is σ = 23564102333184. Its totient is φ = 4488400444400.

The previous prime is 11221001110993. The next prime is 11221001111027. The reversal of 11221001111020 is 2011110012211.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (11221001111027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280525027756 + ... + 280525027795.

It is an arithmetic number, because the mean of its divisors is an integer number (1963675194432).

Almost surely, 2^{11221001111020} is an apocalyptic number.

11221001111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11221001111020 is an abundant number, since it is smaller than the sum of its proper divisors (12343101222164).

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

11221001111020 is a wasteful number, since it uses less digits than its factorization.

11221001111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561050055560 (or 561050055558 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11221001111020 its reverse (2011110012211), we get a palindrome (13232111123231).

The spelling of 11221001111020 in words is "eleven trillion, two hundred twenty-one billion, one million, one hundred eleven thousand, twenty".