331211222012 has 12 divisors (see below), whose sum is σ = 632312333016. Its totient is φ = 150550555440.

The previous prime is 331211221987. The next prime is 331211222029. The reversal of 331211222012 is 210222112133.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3763763843 + ... + 3763763930.

It is an arithmetic number, because the mean of its divisors is an integer number (52692694418).

Almost surely, 2^331211222012 is an apocalyptic number.

It is an amenable number.

331211222012 is a deficient number, since it is larger than the sum of its proper divisors (301101111004).

331211222012 is a wasteful number, since it uses less digits than its factorization.

331211222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7527527788 (or 7527527786 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 331211222012 its reverse (210222112133), we get a palindrome (541433334145).

The spelling of 331211222012 in words is "three hundred thirty-one billion, two hundred eleven million, two hundred twenty-two thousand, twelve".