11221102100220 has 96 divisors (see below), whose sum is σ = 32503331488320. Its totient is φ = 2889037670400.

The previous prime is 11221102100209. The next prime is 11221102100333. The reversal of 11221102100220 is 2200120112211.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11221102100220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112272270 + ... + 112372170.

It is an arithmetic number, because the mean of its divisors is an integer number (338576369670).

Almost surely, 2^{11221102100220} is an apocalyptic number.

11221102100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11221102100220 is an abundant number, since it is smaller than the sum of its proper divisors (21282229388100).

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

11221102100220 is a wasteful number, since it uses less digits than its factorization.

11221102100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164495 (or 164493 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11221102100220 its reverse (2200120112211), we get a palindrome (13421222212431).

The spelling of 11221102100220 in words is "eleven trillion, two hundred twenty-one billion, one hundred two million, one hundred thousand, two hundred twenty".