3111111202121 has 8 divisors (see below), whose sum is σ = 3350489278920. Its totient is φ = 2871741958272.

The previous prime is 3111111202079. The next prime is 3111111202141. The reversal of 3111111202121 is 1212021111113.

3111111202121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 341096881225 + 2770014320896 = 584035^2 + 1664336^2 .

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 3111111202121 - 2³⁸ = 2836233295177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3111111202121.

It is not an unprimeable number, because it can be changed into a prime (3111111202141) 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, 1467500 + ... + 2894093.

It is an arithmetic number, because the mean of its divisors is an integer number (418811159865).

Almost surely, 2^{3111111202121} is an apocalyptic number.

It is an amenable number.

3111111202121 is a deficient number, since it is larger than the sum of its proper divisors (239378076799).

3111111202121 is a wasteful number, since it uses less digits than its factorization.

3111111202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4416475.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 3111111202121 its reverse (1212021111113), we get a palindrome (4323132313234).

The spelling of 3111111202121 in words is "three trillion, one hundred eleven billion, one hundred eleven million, two hundred two thousand, one hundred twenty-one".