221300302420 has 48 divisors (see below), whose sum is σ = 465871896000. Its totient is φ = 88302905856.

The previous prime is 221300302393. The next prime is 221300302459. The reversal of 221300302420 is 24203003122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33160204 + ... + 33166876.

It is an arithmetic number, because the mean of its divisors is an integer number (9705664500).

Almost surely, 2^221300302420 is an apocalyptic number.

221300302420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221300302420 is an abundant number, since it is smaller than the sum of its proper divisors (244571593580).

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

221300302420 is a wasteful number, since it uses less digits than its factorization.

221300302420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10504 (or 10502 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 221300302420 its reverse (24203003122), we get a palindrome (245503305542).

The spelling of 221300302420 in words is "two hundred twenty-one billion, three hundred million, three hundred two thousand, four hundred twenty".