20120131222 has 16 divisors (see below), whose sum is σ = 31962419712. Its totient is φ = 9479048040.

The previous prime is 20120131219. The next prime is 20120131223. The reversal of 20120131222 is 22213102102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20120131196 and 20120131205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120131223) by changing a digit.

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, 3261054 + ... + 3267217.

It is an arithmetic number, because the mean of its divisors is an integer number (1997651232).

Almost surely, 2^20120131222 is an apocalyptic number.

20120131222 is a deficient number, since it is larger than the sum of its proper divisors (11842288490).

20120131222 is a wasteful number, since it uses less digits than its factorization.

20120131222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6528363.

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

Adding to 20120131222 its reverse (22213102102), we get a palindrome (42333233324).

The spelling of 20120131222 in words is "twenty billion, one hundred twenty million, one hundred thirty-one thousand, two hundred twenty-two".