201223321002 has 96 divisors (see below), whose sum is σ = 488884009536. Its totient is φ = 59296473600.

The previous prime is 201223320979. The next prime is 201223321021. The reversal of 201223321002 is 200123322102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1100977 + ... + 1270667.

It is an arithmetic number, because the mean of its divisors is an integer number (5092541766).

Almost surely, 2^201223321002 is an apocalyptic number.

201223321002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 201223321002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244442004768).

201223321002 is an abundant number, since it is smaller than the sum of its proper divisors (287660688534).

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

201223321002 is a wasteful number, since it uses less digits than its factorization.

201223321002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169876 (or 169873 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 201223321002 its reverse (200123322102), we get a palindrome (401346643104).

It can be divided in two parts, 201223 and 321002, that added together give a palindrome (522225).

The spelling of 201223321002 in words is "two hundred one billion, two hundred twenty-three million, three hundred twenty-one thousand, two".