10211221012012 has 12 divisors (see below), whose sum is σ = 17987978737456. Its totient is φ = 5071798515600.

The previous prime is 10211221012009. The next prime is 10211221012019. The reversal of 10211221012012 is 21021012211201.

It is not an unprimeable number, because it can be changed into a prime (10211221012019) 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 3 ways as a sum of consecutive naturals, for example, 8452996923 + ... + 8452998130.

Almost surely, 2^{10211221012012} is an apocalyptic number.

It is an amenable number.

10211221012012 is a deficient number, since it is larger than the sum of its proper divisors (7776757725444).

10211221012012 is a wasteful number, since it uses less digits than its factorization.

10211221012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16905995208 (or 16905995206 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10211221012012 its reverse (21021012211201), we get a palindrome (31232233223213).

The spelling of 10211221012012 in words is "ten trillion, two hundred eleven billion, two hundred twenty-one million, twelve thousand, twelve".