221232231300 has 72 divisors (see below), whose sum is σ = 643931660736. Its totient is φ = 58641983360.

The previous prime is 221232231281. The next prime is 221232231307. The reversal of 221232231300 is 3132232122.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (221232231307) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2157807 + ... + 2258006.

It is an arithmetic number, because the mean of its divisors is an integer number (8943495288).

Almost surely, 2^221232231300 is an apocalyptic number.

221232231300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221232231300 is an abundant number, since it is smaller than the sum of its proper divisors (422699429436).

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

221232231300 is a wasteful number, since it uses less digits than its factorization.

221232231300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4415997 (or 4415990 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 221232231300 its reverse (3132232122), we get a palindrome (224364463422).

The spelling of 221232231300 in words is "two hundred twenty-one billion, two hundred thirty-two million, two hundred thirty-one thousand, three hundred".