3121322020133 has 4 divisors (see below), whose sum is σ = 3122469989760. Its totient is φ = 3120174050508.

The previous prime is 3121322020111. The next prime is 3121322020177. The reversal of 3121322020133 is 3310202231213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3121322020133 - 2⁸ = 3121322019877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3121322020099 and 3121322020108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121322320133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 573980735 + ... + 573986172.

It is an arithmetic number, because the mean of its divisors is an integer number (780617497440).

Almost surely, 2^{3121322020133} is an apocalyptic number.

It is an amenable number.

3121322020133 is a deficient number, since it is larger than the sum of its proper divisors (1147969627).

3121322020133 is a wasteful number, since it uses less digits than its factorization.

3121322020133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147969626.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 3121322020133 its reverse (3310202231213), we get a palindrome (6431524251346).

The spelling of 3121322020133 in words is "three trillion, one hundred twenty-one billion, three hundred twenty-two million, twenty thousand, one hundred thirty-three".