31221200201002 has 16 divisors (see below), whose sum is σ = 53522431505280. Its totient is φ = 13380420867408.

The previous prime is 31221200200877. The next prime is 31221200201063. The reversal of 31221200201002 is 20010200212213.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5697673 + ... + 9741964.

It is an arithmetic number, because the mean of its divisors is an integer number (3345151969080).

Almost surely, 2^{31221200201002} is an apocalyptic number.

31221200201002 is a deficient number, since it is larger than the sum of its proper divisors (22301231304278).

31221200201002 is a wasteful number, since it uses less digits than its factorization.

31221200201002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15584085.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 31221200201002 its reverse (20010200212213), we get a palindrome (51231400413215).

The spelling of 31221200201002 in words is "thirty-one trillion, two hundred twenty-one billion, two hundred million, two hundred one thousand, two".