12121030031211 has 64 divisors (see below), whose sum is σ = 18118643200000. Its totient is φ = 8008262121600.

The previous prime is 12121030031203. The next prime is 12121030031269. The reversal of 12121030031211 is 11213003012121.

12121030031211 is a `hidden beast` number, since 1 + 2 + 121 + 0 + 300 + 31 + 211 = 666.

12121030031211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12121030031211 - 2³ = 12121030031203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12121030031111) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5973892545 + ... + 5973894573.

It is an arithmetic number, because the mean of its divisors is an integer number (283103800000).

Almost surely, 2^{12121030031211} is an apocalyptic number.

12121030031211 is a deficient number, since it is larger than the sum of its proper divisors (5997613168789).

12121030031211 is a wasteful number, since it uses less digits than its factorization.

12121030031211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4921 (or 4915 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 12121030031211 its reverse (11213003012121), we get a palindrome (23334033043332).

The spelling of 12121030031211 in words is "twelve trillion, one hundred twenty-one billion, thirty million, thirty-one thousand, two hundred eleven".