221031003000 has 128 divisors (see below), whose sum is σ = 690059373120. Its totient is φ = 58903769600.

The previous prime is 221031002953. The next prime is 221031003013. The reversal of 221031003000 is 300130122.

It is a happy number.

221031003000 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 (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4816162 + ... + 4861838.

Almost surely, 2^221031003000 is an apocalyptic number.

221031003000 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 221031003000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345029686560).

221031003000 is an abundant number, since it is smaller than the sum of its proper divisors (469028370120).

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

221031003000 is a wasteful number, since it uses less digits than its factorization.

221031003000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47314 (or 47300 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 221031003000 its reverse (300130122), we get a palindrome (221331133122).

The spelling of 221031003000 in words is "two hundred twenty-one billion, thirty-one million, three thousand".