1331222012 has 12 divisors (see below), whose sum is σ = 2330431320. Its totient is φ = 665384496.

The previous prime is 1331221987. The next prime is 1331222021. The reversal of 1331222012 is 2102221331.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43043 + ... + 67194.

It is an arithmetic number, because the mean of its divisors is an integer number (194202610).

Almost surely, 2^1331222012 is an apocalyptic number.

It is an amenable number.

1331222012 is a deficient number, since it is larger than the sum of its proper divisors (999209308).

1331222012 is a wasteful number, since it uses less digits than its factorization.

1331222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113260 (or 113258 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1331222012 is about 36485.9152550679. The cubic root of 1331222012 is about 1100.0611569304.

Adding to 1331222012 its reverse (2102221331), we get a palindrome (3433443343).

The spelling of 1331222012 in words is "one billion, three hundred thirty-one million, two hundred twenty-two thousand, twelve".