10221220011111 has 16 divisors (see below), whose sum is σ = 13662647032320. Its totient is φ = 6796970748800.

The previous prime is 10221220011109. The next prime is 10221220011179. The reversal of 10221220011111 is 11111002212201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 10221220011111 - 2¹ = 10221220011109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221220091111) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 56020450 + ... + 56202608.

It is an arithmetic number, because the mean of its divisors is an integer number (853915439520).

Almost surely, 2^{10221220011111} is an apocalyptic number.

10221220011111 is a deficient number, since it is larger than the sum of its proper divisors (3441427021209).

10221220011111 is a wasteful number, since it uses less digits than its factorization.

10221220011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229206.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 10221220011111 its reverse (11111002212201), we get a palindrome (21332222223312).

The spelling of 10221220011111 in words is "ten trillion, two hundred twenty-one billion, two hundred twenty million, eleven thousand, one hundred eleven".