11101101001220 has 48 divisors (see below), whose sum is σ = 23483551432320. Its totient is φ = 4407832978944.

The previous prime is 11101101001189. The next prime is 11101101001271. The reversal of 11101101001220 is 2210010110111.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18432497 + ... + 19025223.

It is an arithmetic number, because the mean of its divisors is an integer number (489240654840).

Almost surely, 2^{11101101001220} is an apocalyptic number.

11101101001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11101101001220 is an abundant number, since it is smaller than the sum of its proper divisors (12382450431100).

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

11101101001220 is a wasteful number, since it uses less digits than its factorization.

11101101001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599612 (or 599610 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11101101001220 its reverse (2210010110111), we get a palindrome (13311111111331).

The spelling of 11101101001220 in words is "eleven trillion, one hundred one billion, one hundred one million, one thousand, two hundred twenty".