221112003220 has 24 divisors (see below), whose sum is σ = 464647113000. Its totient is φ = 88385390592.

The previous prime is 221112003199. The next prime is 221112003227. The reversal of 221112003220 is 22300211122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 26325711504 + 194786291716 = 162252^2 + 441346^2 .

It is a super-2 number, since 2×221112003220² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221112003194 and 221112003203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221112003227) 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, 3682645 + ... + 3742204.

It is an arithmetic number, because the mean of its divisors is an integer number (19360296375).

Almost surely, 2^221112003220 is an apocalyptic number.

221112003220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221112003220 is an abundant number, since it is smaller than the sum of its proper divisors (243535109780).

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

221112003220 is a wasteful number, since it uses less digits than its factorization.

221112003220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7426347 (or 7426345 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 221112003220 its reverse (22300211122), we get a palindrome (243412214342).

The spelling of 221112003220 in words is "two hundred twenty-one billion, one hundred twelve million, three thousand, two hundred twenty".