221310120000 has 280 divisors, whose sum is σ = 732834817792. Its totient is φ = 58924800000.

The previous prime is 221310119983. The next prime is 221310120019. The reversal of 221310120000 is 21013122.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 118919070 + ... + 118920930.

Almost surely, 2^221310120000 is an apocalyptic number.

221310120000 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 221310120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (366417408896).

221310120000 is an abundant number, since it is smaller than the sum of its proper divisors (511524697792).

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

221310120000 is an equidigital number, since it uses as much as digits as its factorization.

221310120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2887 (or 2862 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 221310120000 its reverse (21013122), we get a palindrome (221331133122).

The spelling of 221310120000 in words is "two hundred twenty-one billion, three hundred ten million, one hundred twenty thousand".