10021201221111 has 16 divisors (see below), whose sum is σ = 13488427031040. Its totient is φ = 6617463386240.

The previous prime is 10021201221061. The next prime is 10021201221167. The reversal of 10021201221111 is 11112210212001.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 10021201221111 - 2⁴¹ = 7822177965559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021201221191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8875791 + ... + 9940928.

It is an arithmetic number, because the mean of its divisors is an integer number (843026689440).

Almost surely, 2^{10021201221111} is an apocalyptic number.

10021201221111 is a deficient number, since it is larger than the sum of its proper divisors (3467225809929).

10021201221111 is a wasteful number, since it uses less digits than its factorization.

10021201221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18818406.

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

Adding to 10021201221111 its reverse (11112210212001), we get a palindrome (21133411433112).

The spelling of 10021201221111 in words is "ten trillion, twenty-one billion, two hundred one million, two hundred twenty-one thousand, one hundred eleven".