221201130 has 32 divisors (see below), whose sum is σ = 531287424. Its totient is φ = 58942016.

The previous prime is 221201117. The next prime is 221201131. The reversal of 221201130 is 31102122.

It is not an unprimeable number, because it can be changed into a prime (221201131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60844 + ... + 64376.

It is an arithmetic number, because the mean of its divisors is an integer number (16602732).

Almost surely, 2^221201130 is an apocalyptic number.

221201130 is an abundant number, since it is smaller than the sum of its proper divisors (310086294).

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

221201130 is a wasteful number, since it uses less digits than its factorization.

221201130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5630.

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

The square root of 221201130 is about 14872.8319428413. The cubic root of 221201130 is about 604.7777158495. Note that the first 4 decimals are identical.

Adding to 221201130 its reverse (31102122), we get a palindrome (252303252).

The spelling of 221201130 in words is "two hundred twenty-one million, two hundred one thousand, one hundred thirty".