2201321111220 has 288 divisors, whose sum is σ = 8368592633856. Its totient is φ = 455021971200.

The previous prime is 2201321111219. The next prime is 2201321111243. The reversal of 2201321111220 is 221111231022.

2201321111220 is a `hidden beast` number, since 220 + 1 + 3 + 211 + 11 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2201321111193 and 2201321111202.

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 95 ways as a sum of consecutive naturals, for example, 2231487 + ... + 3063033.

It is an arithmetic number, because the mean of its divisors is an integer number (29057613312).

Almost surely, 2^{2201321111220} is an apocalyptic number.

2201321111220 is a gapful number since it is divisible by the number (20) 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 2201321111220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4184296316928).

2201321111220 is an abundant number, since it is smaller than the sum of its proper divisors (6167271522636).

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

2201321111220 is a wasteful number, since it uses less digits than its factorization.

2201321111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831771 (or 831766 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2201321111220 its reverse (221111231022), we get a palindrome (2422432342242).

The spelling of 2201321111220 in words is "two trillion, two hundred one billion, three hundred twenty-one million, one hundred eleven thousand, two hundred twenty".