11101201101220 has 24 divisors (see below), whose sum is σ = 23361191481600. Its totient is φ = 4431210122592.

The previous prime is 11101201101181. The next prime is 11101201101223. The reversal of 11101201101220 is 2210110210111.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11101201101220.

It is not an unprimeable number, because it can be changed into a prime (11101201101223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 579385050 + ... + 579404209.

It is an arithmetic number, because the mean of its divisors is an integer number (973382978400).

Almost surely, 2^{11101201101220} is an apocalyptic number.

11101201101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11101201101220 is an abundant number, since it is smaller than the sum of its proper divisors (12259990380380).

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

11101201101220 is a wasteful number, since it uses less digits than its factorization.

11101201101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158789747 (or 1158789745 counting only the distinct ones).

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

Adding to 11101201101220 its reverse (2210110210111), we get a palindrome (13311311311331).

The spelling of 11101201101220 in words is "eleven trillion, one hundred one billion, two hundred one million, one hundred one thousand, two hundred twenty".