11220221212112 has 160 divisors (see below), whose sum is σ = 25078735572480. Its totient is φ = 4814942146560.

The previous prime is 11220221212093. The next prime is 11220221212133. The reversal of 11220221212112 is 21121212202211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 262176188 + ... + 262218980.

It is an arithmetic number, because the mean of its divisors is an integer number (156742097328).

Almost surely, 2^{11220221212112} 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 11220221212112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12539367786240).

11220221212112 is an abundant number, since it is smaller than the sum of its proper divisors (13858514360368).

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

11220221212112 is a wasteful number, since it uses less digits than its factorization.

11220221212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43981 (or 43975 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 11220221212112 its reverse (21121212202211), we get a palindrome (32341433414323).

Subtracting 11220221212112 from its reverse (21121212202211), we obtain a palindrome (9900990990099).

The spelling of 11220221212112 in words is "eleven trillion, two hundred twenty billion, two hundred twenty-one million, two hundred twelve thousand, one hundred twelve".