221232210012320 has 48 divisors (see below), whose sum is σ = 562865795863560. Its totient is φ = 81685739080704.

The previous prime is 221232210012271. The next prime is 221232210012329. The reversal of 221232210012320 is 23210012232122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 107875560051856 + 113356649960464 = 10386316^2 + 10646908^2 .

It is not an unprimeable number, because it can be changed into a prime (221232210012329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53180817635 + ... + 53180821794.

Almost surely, 2^{221232210012320} is an apocalyptic number.

221232210012320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221232210012320 is an abundant number, since it is smaller than the sum of its proper divisors (341633585851240).

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

221232210012320 is a wasteful number, since it uses less digits than its factorization.

221232210012320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106361639457 (or 106361639449 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 221232210012320 its reverse (23210012232122), we get a palindrome (244442222244442).

The spelling of 221232210012320 in words is "two hundred twenty-one trillion, two hundred thirty-two billion, two hundred ten million, twelve thousand, three hundred twenty".