3121022012 has 6 divisors (see below), whose sum is σ = 5461788528. Its totient is φ = 1560511004.

The previous prime is 3121022011. The next prime is 3121022017. The reversal of 3121022012 is 2102201213.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121022011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390127748 + ... + 390127755.

It is an arithmetic number, because the mean of its divisors is an integer number (910298088).

Almost surely, 2^3121022012 is an apocalyptic number.

It is an amenable number.

3121022012 is a deficient number, since it is larger than the sum of its proper divisors (2340766516).

3121022012 is a wasteful number, since it uses less digits than its factorization.

3121022012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780255507 (or 780255505 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 3121022012 is about 55866.1079009447. The cubic root of 3121022012 is about 1461.3882479588.

Adding to 3121022012 its reverse (2102201213), we get a palindrome (5223223225).

The spelling of 3121022012 in words is "three billion, one hundred twenty-one million, twenty-two thousand, twelve".