111121321102 has 16 divisors (see below), whose sum is σ = 181843732224. Its totient is φ = 50507235000.

The previous prime is 111121321093. The next prime is 111121321111. The reversal of 111121321102 is 201123121111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111121321093) and next prime (111121321111).

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, 386827 + ... + 609817.

It is an arithmetic number, because the mean of its divisors is an integer number (11365233264).

Almost surely, 2^111121321102 is an apocalyptic number.

111121321102 is a deficient number, since it is larger than the sum of its proper divisors (70722411122).

111121321102 is a wasteful number, since it uses less digits than its factorization.

111121321102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245655.

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

Adding to 111121321102 its reverse (201123121111), we get a palindrome (312244442213).

Subtracting 111121321102 from its reverse (201123121111), we obtain a square (90001800009 = 300003²).

The spelling of 111121321102 in words is "one hundred eleven billion, one hundred twenty-one million, three hundred twenty-one thousand, one hundred two".