221332110231210 has 128 divisors (see below), whose sum is σ = 593296054078464. Its totient is φ = 52379115317760.

The previous prime is 221332110231209. The next prime is 221332110231217. The reversal of 221332110231210 is 12132011233122.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221332110231217) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20993302 + ... + 29721758.

It is an arithmetic number, because the mean of its divisors is an integer number (4635125422488).

Almost surely, 2^{221332110231210} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221332110231210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296648027039232).

221332110231210 is an abundant number, since it is smaller than the sum of its proper divisors (371963943847254).

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

221332110231210 is a wasteful number, since it uses less digits than its factorization.

221332110231210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8730308.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 221332110231210 its reverse (12132011233122), we get a palindrome (233464121464332).

The spelling of 221332110231210 in words is "two hundred twenty-one trillion, three hundred thirty-two billion, one hundred ten million, two hundred thirty-one thousand, two hundred ten".