221011301010000 has 400 divisors, whose sum is σ = 714991172886144. Its totient is φ = 58809513216000.

The previous prime is 221011301009977. The next prime is 221011301010037. The reversal of 221011301010000 is 10103110122.

It is a tau number, because it is divible by the number of its divisors (400).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 29401526242 + ... + 29401533758.

Almost surely, 2^{221011301010000} is an apocalyptic number.

221011301010000 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 221011301010000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (357495586443072).

221011301010000 is an abundant number, since it is smaller than the sum of its proper divisors (493979871876144).

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

221011301010000 is an equidigital number, since it uses as much as digits as its factorization.

221011301010000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9528 (or 9507 counting only the distinct ones).

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

Adding to 221011301010000 its reverse (10103110122), we get a palindrome (221021404120122).

The spelling of 221011301010000 in words is "two hundred twenty-one trillion, eleven billion, three hundred one million, ten thousand".