11101211102220 has 48 divisors (see below), whose sum is σ = 31084015576320. Its totient is φ = 2960263485376.

The previous prime is 11101211102077. The next prime is 11101211102239. The reversal of 11101211102220 is 2220111210111.

It is a happy number.

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 11101211102220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1194169 + ... + 4860911.

It is an arithmetic number, because the mean of its divisors is an integer number (647583657840).

Almost surely, 2^{11101211102220} is an apocalyptic number.

11101211102220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11101211102220 is an abundant number, since it is smaller than the sum of its proper divisors (19982804474100).

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

11101211102220 is a wasteful number, since it uses less digits than its factorization.

11101211102220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3717214 (or 3717212 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11101211102220 its reverse (2220111210111), we get a palindrome (13321322312331).

The spelling of 11101211102220 in words is "eleven trillion, one hundred one billion, two hundred eleven million, one hundred two thousand, two hundred twenty".