221060640000 has 180 divisors, whose sum is σ = 735195862016. Its totient is φ = 58949376000.

The previous prime is 221060639993. The next prime is 221060640019. The reversal of 221060640000 is 46060122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 249729 + ... + 710271.

Almost surely, 2^221060640000 is an apocalyptic number.

221060640000 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 221060640000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (367597931008).

221060640000 is an abundant number, since it is smaller than the sum of its proper divisors (514135222016).

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

221060640000 is an frugal number, since it uses more digits than its factorization.

221060640000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460582 (or 460553 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The spelling of 221060640000 in words is "two hundred twenty-one billion, sixty million, six hundred forty thousand".