221301111300 has 72 divisors (see below), whose sum is σ = 640480881600. Its totient is φ = 58996763520.

The previous prime is 221301111277. The next prime is 221301111307. The reversal of 221301111300 is 3111103122.

It is a happy number.

It is a super-2 number, since 2×221301111300² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 221301111300.

It is not an unprimeable number, because it can be changed into a prime (221301111307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 964066 + ... + 1171334.

It is an arithmetic number, because the mean of its divisors is an integer number (8895567800).

Almost surely, 2^221301111300 is an apocalyptic number.

221301111300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221301111300 is an abundant number, since it is smaller than the sum of its proper divisors (419179770300).

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

221301111300 is a wasteful number, since it uses less digits than its factorization.

221301111300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210845 (or 210838 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 221301111300 its reverse (3111103122), we get a palindrome (224412214422).

The spelling of 221301111300 in words is "two hundred twenty-one billion, three hundred one million, one hundred eleven thousand, three hundred".