221110223202 has 192 divisors, whose sum is σ = 555879227904. Its totient is φ = 65292272640.

The previous prime is 221110223179. The next prime is 221110223203. The reversal of 221110223202 is 202322011122.

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

It is not an unprimeable number, because it can be changed into a prime (221110223203) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 132638773 + ... + 132640439.

It is an arithmetic number, because the mean of its divisors is an integer number (2895204312).

Almost surely, 2^221110223202 is an apocalyptic number.

221110223202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 221110223202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277939613952).

221110223202 is an abundant number, since it is smaller than the sum of its proper divisors (334769004702).

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

221110223202 is a wasteful number, since it uses less digits than its factorization.

221110223202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2315 (or 2303 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 221110223202 its reverse (202322011122), we get a palindrome (423432234324).

The spelling of 221110223202 in words is "two hundred twenty-one billion, one hundred ten million, two hundred twenty-three thousand, two hundred two".