11103122331220 has 48 divisors (see below), whose sum is σ = 23355309978000. Its totient is φ = 4433873495040.

The previous prime is 11103122331193. The next prime is 11103122331239. The reversal of 11103122331220 is 2213322130111.

It can be written as a sum of positive squares in 8 ways, for example, as 643046817604 + 10460075513616 = 801902^2 + 3234204^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11103122331191 and 11103122331200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29110306 + ... + 29489254.

It is an arithmetic number, because the mean of its divisors is an integer number (486568957875).

Almost surely, 2^{11103122331220} is an apocalyptic number.

11103122331220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11103122331220 is an abundant number, since it is smaller than the sum of its proper divisors (12252187646780).

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

11103122331220 is a wasteful number, since it uses less digits than its factorization.

11103122331220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381388 (or 381386 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 11103122331220 its reverse (2213322130111), we get a palindrome (13316444461331).

The spelling of 11103122331220 in words is "eleven trillion, one hundred three billion, one hundred twenty-two million, three hundred thirty-one thousand, two hundred twenty".