221112030 has 64 divisors (see below), whose sum is σ = 563666688. Its totient is φ = 55319040.

The previous prime is 221112029. The next prime is 221112043. The reversal of 221112030 is 30211122.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 221111997 and 221112015.

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, 249969 + ... + 250851.

It is an arithmetic number, because the mean of its divisors is an integer number (8807292).

Almost surely, 2^221112030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221112030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281833344).

221112030 is an abundant number, since it is smaller than the sum of its proper divisors (342554658).

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

221112030 is a wasteful number, since it uses less digits than its factorization.

221112030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 221112030 is about 14869.8362465765. The cubic root of 221112030 is about 604.6965032879.

Adding to 221112030 its reverse (30211122), we get a palindrome (251323152).

It can be divided in two parts, 2211 and 12030, that added together give a palindrome (14241).

The spelling of 221112030 in words is "two hundred twenty-one million, one hundred twelve thousand, thirty".