31222321244012 has 12 divisors (see below), whose sum is σ = 54681849235440. Its totient is φ = 15598935748176.

The previous prime is 31222321244011. The next prime is 31222321244039. The reversal of 31222321244012 is 21044212322213.

It is a super-2 number, since 2×31222321244012² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31222321244011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3056212712 + ... + 3056222927.

It is an arithmetic number, because the mean of its divisors is an integer number (4556820769620).

Almost surely, 2^{31222321244012} is an apocalyptic number.

It is an amenable number.

31222321244012 is a deficient number, since it is larger than the sum of its proper divisors (23459527991428).

31222321244012 is a wasteful number, since it uses less digits than its factorization.

31222321244012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6112436920 (or 6112436918 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 31222321244012 its reverse (21044212322213), we get a palindrome (52266533566225).

The spelling of 31222321244012 in words is "thirty-one trillion, two hundred twenty-two billion, three hundred twenty-one million, two hundred forty-four thousand, twelve".