102221131111 has 32 divisors (see below), whose sum is σ = 115707626496. Its totient is φ = 89509056000.

The previous prime is 102221131109. The next prime is 102221131163. The reversal of 102221131111 is 111131122201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 102221131111 - 2¹ = 102221131109 is a prime.

It is a super-2 number, since 2×102221131111² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102221131171) 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 31 ways as a sum of consecutive naturals, for example, 9970590 + ... + 9980836.

It is an arithmetic number, because the mean of its divisors is an integer number (3615863328).

Almost surely, 2^102221131111 is an apocalyptic number.

102221131111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

102221131111 is a deficient number, since it is larger than the sum of its proper divisors (13486495385).

102221131111 is a wasteful number, since it uses less digits than its factorization.

102221131111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10623.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 102221131111 its reverse (111131122201), we get a palindrome (213352253312).

It can be divided in two parts, 102221 and 131111, that added together give a palindrome (233332).

The spelling of 102221131111 in words is "one hundred two billion, two hundred twenty-one million, one hundred thirty-one thousand, one hundred eleven".