10211221001111 has 24 divisors (see below), whose sum is σ = 11714402229264. Its totient is φ = 8846195639040.

The previous prime is 10211221001089. The next prime is 10211221001161. The reversal of 10211221001111 is 11110012211201.

It is not a de Polignac number, because 10211221001111 - 2⁴² = 5813174490007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211221001161) 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 23 ways as a sum of consecutive naturals, for example, 9665330 + ... + 10669631.

It is an arithmetic number, because the mean of its divisors is an integer number (488100092886).

Almost surely, 2^{10211221001111} is an apocalyptic number.

10211221001111 is a deficient number, since it is larger than the sum of its proper divisors (1503181228153).

10211221001111 is a wasteful number, since it uses less digits than its factorization.

10211221001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20335119 (or 20335100 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 10211221001111 its reverse (11110012211201), we get a palindrome (21321233212312).

The spelling of 10211221001111 in words is "ten trillion, two hundred eleven billion, two hundred twenty-one million, one thousand, one hundred eleven".