221120222211112 has 128 divisors (see below), whose sum is σ = 482153659833600. Its totient is φ = 93104528025600.

The previous prime is 221120222211061. The next prime is 221120222211127. The reversal of 221120222211112 is 211112222021122.

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, 23490935718 + ... + 23490945130.

It is an arithmetic number, because the mean of its divisors is an integer number (3766825467450).

Almost surely, 2^{221120222211112} 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 221120222211112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241076829916800).

221120222211112 is an abundant number, since it is smaller than the sum of its proper divisors (261033437622488).

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

221120222211112 is a wasteful number, since it uses less digits than its factorization.

221120222211112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16707 (or 16703 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 221120222211112 its reverse (211112222021122), we get a palindrome (432232444232234).

The spelling of 221120222211112 in words is "two hundred twenty-one trillion, one hundred twenty billion, two hundred twenty-two million, two hundred eleven thousand, one hundred twelve".