31222001332002 has 32 divisors (see below), whose sum is σ = 67291542295488. Its totient is φ = 9600461810496.

The previous prime is 31222001331991. The next prime is 31222001332003. The reversal of 31222001332002 is 20023310022213.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 31222001332002.

It is not an unprimeable number, because it can be changed into a prime (31222001332003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131293573 + ... + 131531160.

It is an arithmetic number, because the mean of its divisors is an integer number (2102860696734).

Almost surely, 2^{31222001332002} is an apocalyptic number.

31222001332002 is an abundant number, since it is smaller than the sum of its proper divisors (36069540963486).

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

31222001332002 is a wasteful number, since it uses less digits than its factorization.

31222001332002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262826274.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31222001332002 its reverse (20023310022213), we get a palindrome (51245311354215).

The spelling of 31222001332002 in words is "thirty-one trillion, two hundred twenty-two billion, one million, three hundred thirty-two thousand, two".