3121203121121 has 8 divisors (see below), whose sum is σ = 3273782778240. Its totient is φ = 2970029728512.

The previous prime is 3121203121097. The next prime is 3121203121129. The reversal of 3121203121121 is 1211213021213.

3121203121121 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 a de Polignac number, because none of the positive numbers 2^k-3121203121121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3121203121093 and 3121203121102.

It is not an unprimeable number, because it can be changed into a prime (3121203121129) 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, 351561581 + ... + 351570458.

It is an arithmetic number, because the mean of its divisors is an integer number (409222847280).

Almost surely, 2^{3121203121121} is an apocalyptic number.

It is an amenable number.

3121203121121 is a deficient number, since it is larger than the sum of its proper divisors (152579657119).

3121203121121 is a wasteful number, since it uses less digits than its factorization.

3121203121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703132255.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 3121203121121 its reverse (1211213021213), we get a palindrome (4332416142334).

The spelling of 3121203121121 in words is "three trillion, one hundred twenty-one billion, two hundred three million, one hundred twenty-one thousand, one hundred twenty-one".