221200700 has 72 divisors (see below), whose sum is σ = 559860000. Its totient is φ = 75828480.

The previous prime is 221200673. The next prime is 221200723. The reversal of 221200700 is 7002122.

221200700 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31076 + ... + 37524.

Almost surely, 2^221200700 is an apocalyptic number.

221200700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221200700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279930000).

221200700 is an abundant number, since it is smaller than the sum of its proper divisors (338659300).

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

221200700 is a wasteful number, since it uses less digits than its factorization.

221200700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6484 (or 6463 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 221200700 is about 14872.8174869458. The cubic root of 221200700 is about 604.7773239669. Note that the first 3 decimals are identical.

Adding to 221200700 its reverse (7002122), we get a palindrome (228202822).

The spelling of 221200700 in words is "two hundred twenty-one million, two hundred thousand, seven hundred".