221301311200 has 72 divisors (see below), whose sum is σ = 540337838040. Its totient is φ = 88506432000.

The previous prime is 221301311107. The next prime is 221301311311. The reversal of 221301311200 is 2113103122.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6052975 + ... + 6089425.

It is an arithmetic number, because the mean of its divisors is an integer number (7504692195).

Almost surely, 2^221301311200 is an apocalyptic number.

221301311200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221301311200 is an abundant number, since it is smaller than the sum of its proper divisors (319036526840).

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

221301311200 is a wasteful number, since it uses less digits than its factorization.

221301311200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44060 (or 44047 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 221301311200 its reverse (2113103122), we get a palindrome (223414414322).

The spelling of 221301311200 in words is "two hundred twenty-one billion, three hundred one million, three hundred eleven thousand, two hundred".