221312011300 has 36 divisors (see below), whose sum is σ = 480637459456. Its totient is φ = 88452842400.

The previous prime is 221312011289. The next prime is 221312011321. The reversal of 221312011300 is 3110213122.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 775812 + ... + 1022011.

Almost surely, 2^221312011300 is an apocalyptic number.

221312011300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221312011300 is an abundant number, since it is smaller than the sum of its proper divisors (259325448156).

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

221312011300 is a wasteful number, since it uses less digits than its factorization.

221312011300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1799068 (or 1799061 counting only the distinct ones).

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

Adding to 221312011300 its reverse (3110213122), we get a palindrome (224422224422).

The spelling of 221312011300 in words is "two hundred twenty-one billion, three hundred twelve million, eleven thousand, three hundred".