3121223313133 has 4 divisors (see below), whose sum is σ = 3127739437440. Its totient is φ = 3114707188828.

The previous prime is 3121223313119. The next prime is 3121223313151. The reversal of 3121223313133 is 3313133221213.

It is a happy number.

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 3121223313133 - 2⁵ = 3121223313101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121223313193) 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, 3258061435 + ... + 3258062392.

It is an arithmetic number, because the mean of its divisors is an integer number (781934859360).

Almost surely, 2^{3121223313133} is an apocalyptic number.

It is an amenable number.

3121223313133 is a deficient number, since it is larger than the sum of its proper divisors (6516124307).

3121223313133 is an equidigital number, since it uses as much as digits as its factorization.

3121223313133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6516124306.

The product of its digits is 5832, while the sum is 28.

Adding to 3121223313133 its reverse (3313133221213), we get a palindrome (6434356534346).

The spelling of 3121223313133 in words is "three trillion, one hundred twenty-one billion, two hundred twenty-three million, three hundred thirteen thousand, one hundred thirty-three".