221232322120100 has 36 divisors (see below), whose sum is σ = 480221809389168. Its totient is φ = 88465708500000.

The previous prime is 221232322120021. The next prime is 221232322120123. The reversal of 221232322120100 is 1021223232122.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 339927626 + ... + 340577825.

Almost surely, 2^{221232322120100} is an apocalyptic number.

221232322120100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221232322120100 is an abundant number, since it is smaller than the sum of its proper divisors (258989487269068).

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

221232322120100 is a wasteful number, since it uses less digits than its factorization.

221232322120100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680508716 (or 680508709 counting only the distinct ones).

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

Adding to 221232322120100 its reverse (1021223232122), we get a palindrome (222253545352222).

The spelling of 221232322120100 in words is "two hundred twenty-one trillion, two hundred thirty-two billion, three hundred twenty-two million, one hundred twenty thousand, one hundred".