213213321131210 has 16 divisors (see below), whose sum is σ = 384155501750856. Its totient is φ = 85202767627008.

The previous prime is 213213321131189. The next prime is 213213321131227. The reversal of 213213321131210 is 12131123312312.

It can be written as a sum of positive squares in 4 ways, for example, as 211769173348681 + 1444147782529 = 14552291^2 + 1201727^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 213213321131210.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10320092339 + ... + 10320112998.

Almost surely, 2^{213213321131210} is an apocalyptic number.

213213321131210 is a deficient number, since it is larger than the sum of its proper divisors (170942180619646).

213213321131210 is a wasteful number, since it uses less digits than its factorization.

213213321131210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20640206377.

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 213213321131210 its reverse (12131123312312), we get a palindrome (225344444443522).

The spelling of 213213321131210 in words is "two hundred thirteen trillion, two hundred thirteen billion, three hundred twenty-one million, one hundred thirty-one thousand, two hundred ten".