3213220553212 has 24 divisors (see below), whose sum is σ = 5902755618816. Its totient is φ = 1527555506928.

The previous prime is 3213220553201. The next prime is 3213220553219. The reversal of 3213220553212 is 2123550223123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3213220553219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104554428 + ... + 104585155.

It is an arithmetic number, because the mean of its divisors is an integer number (245948150784).

Almost surely, 2^{3213220553212} is an apocalyptic number.

It is an amenable number.

3213220553212 is a deficient number, since it is larger than the sum of its proper divisors (2689535065604).

3213220553212 is a wasteful number, since it uses less digits than its factorization.

3213220553212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209139777 (or 209139775 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 3213220553212 its reverse (2123550223123), we get a palindrome (5336770776335).

The spelling of 3213220553212 in words is "three trillion, two hundred thirteen billion, two hundred twenty million, five hundred fifty-three thousand, two hundred twelve".