3121030203211 has 12 divisors (see below), whose sum is σ = 3270197175840. Its totient is φ = 2978406493040.

The previous prime is 3121030203169. The next prime is 3121030203287. The reversal of 3121030203211 is 1123020301213.

It is not a de Polignac number, because 3121030203211 - 2¹⁵ = 3121030170443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121034203211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6616396 + ... + 7072393.

It is an arithmetic number, because the mean of its divisors is an integer number (272516431320).

Almost surely, 2^{3121030203211} is an apocalyptic number.

3121030203211 is a deficient number, since it is larger than the sum of its proper divisors (149166972629).

3121030203211 is a wasteful number, since it uses less digits than its factorization.

3121030203211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13689266 (or 13689243 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 3121030203211 its reverse (1123020301213), we get a palindrome (4244050504424).

The spelling of 3121030203211 in words is "three trillion, one hundred twenty-one billion, thirty million, two hundred three thousand, two hundred eleven".