221013030 has 96 divisors (see below), whose sum is σ = 620524800. Its totient is φ = 50232000.

The previous prime is 221013029. The next prime is 221013047. The reversal of 221013030 is 30310122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221012997 and 221013015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 368671 + ... + 369269.

It is an arithmetic number, because the mean of its divisors is an integer number (6463800).

Almost surely, 2^221013030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221013030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310262400).

221013030 is an abundant number, since it is smaller than the sum of its proper divisors (399511770).

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

221013030 is a wasteful number, since it uses less digits than its factorization.

221013030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874 (or 867 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 221013030 is about 14866.5069871843. The cubic root of 221013030 is about 604.6062415163.

Adding to 221013030 its reverse (30310122), we get a palindrome (251323152).

The spelling of 221013030 in words is "two hundred twenty-one million, thirteen thousand, thirty".