11321221322220 has 96 divisors (see below), whose sum is σ = 32018475073536. Its totient is φ = 2988615840000.

The previous prime is 11321221322179. The next prime is 11321221322231. The reversal of 11321221322220 is 2222312212311.

11321221322220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 37950645 + ... + 38247795.

It is an arithmetic number, because the mean of its divisors is an integer number (333525782016).

Almost surely, 2^{11321221322220} is an apocalyptic number.

11321221322220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11321221322220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16009237536768).

11321221322220 is an abundant number, since it is smaller than the sum of its proper divisors (20697253751316).

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

11321221322220 is a wasteful number, since it uses less digits than its factorization.

11321221322220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303551 (or 303549 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 11321221322220 its reverse (2222312212311), we get a palindrome (13543533534531).

The spelling of 11321221322220 in words is "eleven trillion, three hundred twenty-one billion, two hundred twenty-one million, three hundred twenty-two thousand, two hundred twenty".