213221021332012 has 12 divisors (see below), whose sum is σ = 373136917426000. Its totient is φ = 106610473496016.

The previous prime is 213221021332001. The next prime is 213221021332019. The reversal of 213221021332012 is 210233120122312.

It is not an unprimeable number, because it can be changed into a prime (213221021332019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6655489 + ... + 21696487.

Almost surely, 2^{213221021332012} is an apocalyptic number.

It is an amenable number.

213221021332012 is a deficient number, since it is larger than the sum of its proper divisors (159915896093988).

213221021332012 is a wasteful number, since it uses less digits than its factorization.

213221021332012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18585000 (or 18584998 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 213221021332012 its reverse (210233120122312), we get a palindrome (423454141454324).

The spelling of 213221021332012 in words is "two hundred thirteen trillion, two hundred twenty-one billion, twenty-one million, three hundred thirty-two thousand, twelve".