221202010112 has 52 divisors (see below), whose sum is σ = 446730554436. Its totient is φ = 109505740800.

The previous prime is 221202010091. The next prime is 221202010129. The reversal of 221202010112 is 211010202122.

It can be written as a sum of positive squares in 2 ways, for example, as 117940043776 + 103261966336 = 343424^2 + 321344^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146348 + ... + 681044.

Almost surely, 2^221202010112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221202010112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223365277218).

221202010112 is an abundant number, since it is smaller than the sum of its proper divisors (225528544324).

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

221202010112 is an equidigital number, since it uses as much as digits as its factorization.

221202010112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534822 (or 534800 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221202010112 its reverse (211010202122), we get a palindrome (432212212234).

It can be divided in two parts, 221202010 and 112, that added together give a palindrome (221202122).

The spelling of 221202010112 in words is "two hundred twenty-one billion, two hundred two million, ten thousand, one hundred twelve".