2221211320012 has 12 divisors (see below), whose sum is σ = 4091705063320. Its totient is φ = 1052152730496.

The previous prime is 2221211320001. The next prime is 2221211320057. The reversal of 2221211320012 is 2100231121222.

It is a Harshad number since it is a multiple of its sum of digits (19).

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 in 3 ways as a sum of consecutive naturals, for example, 14613232293 + ... + 14613232444.

Almost surely, 2^{2221211320012} is an apocalyptic number.

It is an amenable number.

2221211320012 is a deficient number, since it is larger than the sum of its proper divisors (1870493743308).

2221211320012 is a wasteful number, since it uses less digits than its factorization.

2221211320012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29226464760 (or 29226464758 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2221211320012 its reverse (2100231121222), we get a palindrome (4321442441234).

The spelling of 2221211320012 in words is "two trillion, two hundred twenty-one billion, two hundred eleven million, three hundred twenty thousand, twelve".