3121222012 has 12 divisors (see below), whose sum is σ = 5554717560. Its totient is φ = 1534159856.

The previous prime is 3121222007. The next prime is 3121222019. The reversal of 3121222012 is 2102221213.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121222019) 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, 6612523 + ... + 6612994.

It is an arithmetic number, because the mean of its divisors is an integer number (462893130).

Almost surely, 2^3121222012 is an apocalyptic number.

It is an amenable number.

3121222012 is a deficient number, since it is larger than the sum of its proper divisors (2433495548).

3121222012 is a wasteful number, since it uses less digits than its factorization.

3121222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13225580 (or 13225578 counting only the distinct ones).

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

The square root of 3121222012 is about 55867.8978663060. The cubic root of 3121222012 is about 1461.4194633112.

Adding to 3121222012 its reverse (2102221213), we get a palindrome (5223443225).

The spelling of 3121222012 in words is "three billion, one hundred twenty-one million, two hundred twenty-two thousand, twelve".