221201020000 has 60 divisors (see below), whose sum is σ = 544187738556. Its totient is φ = 88480400000.

The previous prime is 221201019997. The next prime is 221201020013. The reversal of 221201020000 is 20102122.

221201020000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5510026 + ... + 5550025.

Almost surely, 2^221201020000 is an apocalyptic number.

221201020000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221201020000 is an abundant number, since it is smaller than the sum of its proper divisors (322986718556).

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

221201020000 is an equidigital number, since it uses as much as digits as its factorization.

221201020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11060081 (or 11060058 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 221201020000 its reverse (20102122), we get a palindrome (221221122122).

The spelling of 221201020000 in words is "two hundred twenty-one billion, two hundred one million, twenty thousand".