3121130001211 has 4 divisors (see below), whose sum is σ = 3121147366000. Its totient is φ = 3121112636424.

The previous prime is 3121130001167. The next prime is 3121130001239. The reversal of 3121130001211 is 1121000311213.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3121130001211 - 2⁹ = 3121130000699 is a prime.

It is a super-2 number, since 2×3121130001211² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121130001511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8409936 + ... + 8773213.

It is an arithmetic number, because the mean of its divisors is an integer number (780286841500).

Almost surely, 2^{3121130001211} is an apocalyptic number.

3121130001211 is a deficient number, since it is larger than the sum of its proper divisors (17364789).

3121130001211 is a wasteful number, since it uses less digits than its factorization.

3121130001211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17364788.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 3121130001211 its reverse (1121000311213), we get a palindrome (4242130312424).

The spelling of 3121130001211 in words is "three trillion, one hundred twenty-one billion, one hundred thirty million, one thousand, two hundred eleven".