11201222021020 has 24 divisors (see below), whose sum is σ = 23738369608800. Its totient is φ = 4439383405632.

The previous prime is 11201222020999. The next prime is 11201222021069. The reversal of 11201222021020 is 2012022210211.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11201222020985 and 11201222021003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2569085440 + ... + 2569089799.

It is an arithmetic number, because the mean of its divisors is an integer number (989098733700).

Almost surely, 2^{11201222021020} is an apocalyptic number.

11201222021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11201222021020 is an abundant number, since it is smaller than the sum of its proper divisors (12537147587780).

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

11201222021020 is a wasteful number, since it uses less digits than its factorization.

11201222021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5138175357 (or 5138175355 counting only the distinct ones).

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

Adding to 11201222021020 its reverse (2012022210211), we get a palindrome (13213244231231).

The spelling of 11201222021020 in words is "eleven trillion, two hundred one billion, two hundred twenty-two million, twenty-one thousand, twenty".