221131000323300 has 144 divisors (see below), whose sum is σ = 661989567456000. Its totient is φ = 56924417356800.

The previous prime is 221131000323253. The next prime is 221131000323403. The reversal of 221131000323300 is 3323000131122.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 45074005 + ... + 49738595.

It is an arithmetic number, because the mean of its divisors is an integer number (4597149774000).

Almost surely, 2^{221131000323300} is an apocalyptic number.

221131000323300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221131000323300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330994783728000).

221131000323300 is an abundant number, since it is smaller than the sum of its proper divisors (440858567132700).

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

221131000323300 is a wasteful number, since it uses less digits than its factorization.

221131000323300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4670086 (or 4670079 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 221131000323300 its reverse (3323000131122), we get a palindrome (224454000454422).

The spelling of 221131000323300 in words is "two hundred twenty-one trillion, one hundred thirty-one billion, three hundred twenty-three thousand, three hundred".