111221201222102 has 16 divisors (see below), whose sum is σ = 167345884742400. Its totient is φ = 55439500268328.

The previous prime is 111221201222051. The next prime is 111221201222113. The reversal of 111221201222102 is 201222102122111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64302602 + ... + 66009597.

It is an arithmetic number, because the mean of its divisors is an integer number (10459117796400).

Almost surely, 2^{111221201222102} is an apocalyptic number.

111221201222102 is a deficient number, since it is larger than the sum of its proper divisors (56124683520298).

111221201222102 is a wasteful number, since it uses less digits than its factorization.

111221201222102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130313515.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 111221201222102 its reverse (201222102122111), we get a palindrome (312443303344213).

Subtracting 111221201222102 from its reverse (201222102122111), we obtain a palindrome (90000900900009).

The spelling of 111221201222102 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred one million, two hundred twenty-two thousand, one hundred two".