3122011213 has 4 divisors (see below), whose sum is σ = 3122536608. Its totient is φ = 3121485820.

The previous prime is 3122011187. The next prime is 3122011247. The reversal of 3122011213 is 3121102213.

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 3122011213 - 2⁹ = 3122010701 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 (3122011253) 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, 253681 + ... + 265702.

It is an arithmetic number, because the mean of its divisors is an integer number (780634152).

Almost surely, 2^3122011213 is an apocalyptic number.

It is an amenable number.

3122011213 is a deficient number, since it is larger than the sum of its proper divisors (525395).

3122011213 is an equidigital number, since it uses as much as digits as its factorization.

3122011213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525394.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 3122011213 is about 55874.9605190017. The cubic root of 3122011213 is about 1461.5426262372.

Adding to 3122011213 its reverse (3121102213), we get a palindrome (6243113426).

The spelling of 3122011213 in words is "three billion, one hundred twenty-two million, eleven thousand, two hundred thirteen".