213311221012 has 6 divisors (see below), whose sum is σ = 373294636778. Its totient is φ = 106655610504.

The previous prime is 213311221001. The next prime is 213311221027. The reversal of 213311221012 is 210122113312.

213311221012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 203612122756 + 9699098256 = 451234^2 + 98484^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26663902623 + ... + 26663902630.

Almost surely, 2^213311221012 is an apocalyptic number.

It is an amenable number.

213311221012 is a deficient number, since it is larger than the sum of its proper divisors (159983415766).

213311221012 is a wasteful number, since it uses less digits than its factorization.

213311221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53327805257 (or 53327805255 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 213311221012 its reverse (210122113312), we get a palindrome (423433334324).

The spelling of 213311221012 in words is "two hundred thirteen billion, three hundred eleven million, two hundred twenty-one thousand, twelve".