221001123002 has 12 divisors (see below), whose sum is σ = 364377885018. Its totient is φ = 100455055800.

The previous prime is 221001123001. The next prime is 221001123011. The reversal of 221001123002 is 200321100122.

It is a happy number.

221001123002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 146274886681 + 74726236321 = 382459^2 + 273361^2 .

It is not an unprimeable number, because it can be changed into a prime (221001123001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 456613649 + ... + 456614132.

Almost surely, 2^221001123002 is an apocalyptic number.

221001123002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221001123002 is a deficient number, since it is larger than the sum of its proper divisors (143376762016).

221001123002 is a wasteful number, since it uses less digits than its factorization.

221001123002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913227805 (or 913227794 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 221001123002 its reverse (200321100122), we get a palindrome (421322223124).

The spelling of 221001123002 in words is "two hundred twenty-one billion, one million, one hundred twenty-three thousand, two".