221300120 has 32 divisors (see below), whose sum is σ = 498553920. Its totient is φ = 88408320.

The previous prime is 221300063. The next prime is 221300137. The reversal of 221300120 is 21003122.

It is a happy number.

It is a super-2 number, since 2×221300120² = 97947486224028800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33404 + ... + 39476.

It is an arithmetic number, because the mean of its divisors is an integer number (15579810).

Almost surely, 2^221300120 is an apocalyptic number.

221300120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221300120 is an abundant number, since it is smaller than the sum of its proper divisors (277253800).

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

221300120 is a wasteful number, since it uses less digits than its factorization.

221300120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6995 (or 6991 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 221300120 is about 14876.1594506109. The cubic root of 221300120 is about 604.8679173446.

Adding to 221300120 its reverse (21003122), we get a palindrome (242303242).

The spelling of 221300120 in words is "two hundred twenty-one million, three hundred thousand, one hundred twenty".