102212101111 has 16 divisors (see below), whose sum is σ = 107843209600. Its totient is φ = 96606403488.

The previous prime is 102212101109. The next prime is 102212101127. The reversal of 102212101111 is 111101212201.

It is a happy number.

It is not a de Polignac number, because 102212101111 - 2¹ = 102212101109 is a prime.

It is a super-2 number, since 2×102212101111² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102212101091 and 102212101100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102212101711) 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, 21340705 + ... + 21345493.

It is an arithmetic number, because the mean of its divisors is an integer number (6740200600).

Almost surely, 2^102212101111 is an apocalyptic number.

102212101111 is a deficient number, since it is larger than the sum of its proper divisors (5631108489).

102212101111 is a wasteful number, since it uses less digits than its factorization.

102212101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7198.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 102212101111 its reverse (111101212201), we get a palindrome (213313313312).

The spelling of 102212101111 in words is "one hundred two billion, two hundred twelve million, one hundred one thousand, one hundred eleven".