221102121000111 has 32 divisors (see below), whose sum is σ = 340237052198400. Its totient is φ = 126629579539584.

The previous prime is 221102121000109. The next prime is 221102121000113. The reversal of 221102121000111 is 111000121201122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (221102121000109) and next prime (221102121000113).

It is not a de Polignac number, because 221102121000111 - 2¹ = 221102121000109 is a prime.

It is a super-2 number, since 2×221102121000111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221102121000113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3330921661 + ... + 3330988038.

It is an arithmetic number, because the mean of its divisors is an integer number (10632407881200).

Almost surely, 2^{221102121000111} is an apocalyptic number.

221102121000111 is a deficient number, since it is larger than the sum of its proper divisors (119134931198289).

221102121000111 is a wasteful number, since it uses less digits than its factorization.

221102121000111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6661909775.

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

Adding to 221102121000111 its reverse (111000121201122), we get a palindrome (332102242201233).

The spelling of 221102121000111 in words is "two hundred twenty-one trillion, one hundred two billion, one hundred twenty-one million, one hundred eleven", and thus it is an aban number.