3121420012 has 6 divisors (see below), whose sum is σ = 5462485028. Its totient is φ = 1560710004.

The previous prime is 3121420007. The next prime is 3121420019. The reversal of 3121420012 is 2100241213.

3121420012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3121420019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390177498 + ... + 390177505.

Almost surely, 2^3121420012 is an apocalyptic number.

It is an amenable number.

3121420012 is a deficient number, since it is larger than the sum of its proper divisors (2341065016).

3121420012 is a wasteful number, since it uses less digits than its factorization.

3121420012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780355007 (or 780355005 counting only the distinct ones).

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

The square root of 3121420012 is about 55869.6698755237. The cubic root of 3121420012 is about 1461.4503651967.

Adding to 3121420012 its reverse (2100241213), we get a palindrome (5221661225).

The spelling of 3121420012 in words is "three billion, one hundred twenty-one million, four hundred twenty thousand, twelve".