3213112121 has 16 divisors (see below), whose sum is σ = 3424052736. Its totient is φ = 3008381376.

The previous prime is 3213112103. The next prime is 3213112151. The reversal of 3213112121 is 1212113123.

It is a cyclic number.

It is not a de Polignac number, because 3213112121 - 2¹⁴ = 3213095737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3213112121.

It is not an unprimeable number, because it can be changed into a prime (3213112151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 561551 + ... + 567243.

It is an arithmetic number, because the mean of its divisors is an integer number (214003296).

Almost surely, 2^3213112121 is an apocalyptic number.

It is an amenable number.

3213112121 is a deficient number, since it is larger than the sum of its proper divisors (210940615).

3213112121 is a wasteful number, since it uses less digits than its factorization.

3213112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6232.

The product of its digits is 72, while the sum is 17.

The square root of 3213112121 is about 56684.3198865436. The cubic root of 3213112121 is about 1475.6225844035.

Adding to 3213112121 its reverse (1212113123), we get a palindrome (4425225244).

The spelling of 3213112121 in words is "three billion, two hundred thirteen million, one hundred twelve thousand, one hundred twenty-one".