221001022002 has 32 divisors (see below), whose sum is σ = 445307342400. Its totient is φ = 73116315648.

The previous prime is 221001021893. The next prime is 221001022007. The reversal of 221001022002 is 200220100122.

It is not an unprimeable number, because it can be changed into a prime (221001022007) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5346249 + ... + 5387427.

It is an arithmetic number, because the mean of its divisors is an integer number (13915854450).

Almost surely, 2^221001022002 is an apocalyptic number.

221001022002 is an abundant number, since it is smaller than the sum of its proper divisors (224306320398).

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

221001022002 is a wasteful number, since it uses less digits than its factorization.

221001022002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47850.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 221001022002 its reverse (200220100122), we get a palindrome (421221122124).

The spelling of 221001022002 in words is "two hundred twenty-one billion, one million, twenty-two thousand, two".