3121126121456 has 40 divisors (see below), whose sum is σ = 6911260671840. Its totient is φ = 1337587605504.

The previous prime is 3121126121437. The next prime is 3121126121479. The reversal of 3121126121456 is 6541216211213.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3774380 + ... + 4526388.

It is an arithmetic number, because the mean of its divisors is an integer number (172781516796).

Almost surely, 2^{3121126121456} is an apocalyptic number.

It is an amenable number.

3121126121456 is an abundant number, since it is smaller than the sum of its proper divisors (3790134550384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3121126121456 is a wasteful number, since it uses less digits than its factorization.

3121126121456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789081 (or 789075 counting only the distinct ones).

The product of its digits is 17280, while the sum is 35.

The spelling of 3121126121456 in words is "three trillion, one hundred twenty-one billion, one hundred twenty-six million, one hundred twenty-one thousand, four hundred fifty-six".