3121000000121 has 8 divisors (see below), whose sum is σ = 3123355509120. Its totient is φ = 3118645362672.

The previous prime is 3121000000109. The next prime is 3121000000147. The reversal of 3121000000121 is 1210000001213.

3121000000121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3121000000121 - 2¹⁴ = 3120999983737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121000000021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7037600 + ... + 7467918.

It is an arithmetic number, because the mean of its divisors is an integer number (390419438640).

Almost surely, 2^{3121000000121} is an apocalyptic number.

It is an amenable number.

3121000000121 is a deficient number, since it is larger than the sum of its proper divisors (2355508999).

3121000000121 is a wasteful number, since it uses less digits than its factorization.

3121000000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435775.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 3121000000121 its reverse (1210000001213), we get a palindrome (4331000001334).

It can be divided in two parts, 3 and 121000000121, that multiplied together give a palindrome (363000000363).

The spelling of 3121000000121 in words is "three trillion, one hundred twenty-one billion, one hundred twenty-one", and thus it is an aban number.