219921228700 has 18 divisors (see below), whose sum is σ = 477229066496. Its totient is φ = 87968491440.

The previous prime is 219921228689. The next prime is 219921228721. The reversal of 219921228700 is 7822129912.

It is a happy number.

219921228700 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1099606044 + ... + 1099606243.

Almost surely, 2^219921228700 is an apocalyptic number.

219921228700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

219921228700 is an abundant number, since it is smaller than the sum of its proper divisors (257307837796).

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

219921228700 is a wasteful number, since it uses less digits than its factorization.

219921228700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2199212301 (or 2199212294 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 43.

The spelling of 219921228700 in words is "two hundred nineteen billion, nine hundred twenty-one million, two hundred twenty-eight thousand, seven hundred".