3121322100213 has 8 divisors (see below), whose sum is σ = 4342709009088. Its totient is φ = 1990408295744.

The previous prime is 3121322100209. The next prime is 3121322100227. The reversal of 3121322100213 is 3120012231213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3121322100213 - 2² = 3121322100209 is a prime.

It is a super-3 number, since 3×3121322100213³ (a number of 38 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3121322100213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121322100263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22618276020 + ... + 22618276157.

It is an arithmetic number, because the mean of its divisors is an integer number (542838626136).

Almost surely, 2^{3121322100213} is an apocalyptic number.

It is an amenable number.

3121322100213 is a deficient number, since it is larger than the sum of its proper divisors (1221386908875).

3121322100213 is a wasteful number, since it uses less digits than its factorization.

3121322100213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45236552203.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 3121322100213 its reverse (3120012231213), we get a palindrome (6241334331426).

The spelling of 3121322100213 in words is "three trillion, one hundred twenty-one billion, three hundred twenty-two million, one hundred thousand, two hundred thirteen".