221112112203220 has 240 divisors, whose sum is σ = 556037036202816. Its totient is φ = 73809890112000.

The previous prime is 221112112203161. The next prime is 221112112203289. The reversal of 221112112203220 is 22302211211122.

221112112203220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221112112203191 and 221112112203200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 966576255 + ... + 966804985.

Almost surely, 2^{221112112203220} is an apocalyptic number.

221112112203220 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 221112112203220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278018518101408).

221112112203220 is an abundant number, since it is smaller than the sum of its proper divisors (334924923999596).

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

221112112203220 is a wasteful number, since it uses less digits than its factorization.

221112112203220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229300 (or 229277 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 221112112203220 its reverse (22302211211122), we get a palindrome (243414323414342).

The spelling of 221112112203220 in words is "two hundred twenty-one trillion, one hundred twelve billion, one hundred twelve million, two hundred three thousand, two hundred twenty".